List of unproduced DC Comics projects

This is a list of unmade and unreleased projects by DC Comics. Some of these productions were, or still are, in "development hell" in other mediums.

Fleischer Studios' Batman
Following the success of the Fleischer Superman cartoons, Fleischer Studios communicated with DC Comics over the possibility of adapting Batman. The communication got to the point of budget discussions as illustrated in a letter dated January 25, 1942, and reproduced in longtime Batman executive producer, Michael E. Uslan's 2011 memoir, The Boy Who Loved Batman. It is, however, unknown how far the production of this project went before being abandoned.

CBS's Mike Henry Batman
Prior to the 1966 juggernaut that was the Adam West/Burt Ward Batman series, CBS attempted to launch a live action children's program based on the character. Former Rams linebacker and Tarzan actor Mike Henry was soon approached to appear as the character and even took publicity stills. The project went into limbo, and after a long stagnation, producers attempted to sell it to NBC; they passed on the project in 1965.

Batman vs. Godzilla
The original idea for this seemingly mismatched crossover comes from the hand of series writer Shinichi Sekizawa, who submitted a manuscript of the proposal in November 1965. Sekizawa's concept featured several characters from the Batman universe, including Robin and Commissioner James Gordon. To actually battle the King of the Monsters, Batman and his sidekicks would have utilized several vehicles to engage in combat, including the Batmobile, the Batcopter, and the Batcycle. The concept also featured the introduction of a weather control apparatus, an idea which would later be worked into the script for Son of Godzilla (1967). It was also going to have another device to control Godzilla himself, which would possibly indicate another antagonist pitting the two characters against each other. In terms of Sekizawa's motivation, his reasoning seems clear in these drafts: to try and repeat the mammoth international success that the crossover film King Kong vs. Godzilla (1962) enjoyed. This is made apparent in allusions to the earlier 1962 film, as even this extremely early take at the concept included mention of Godzilla's battle with King Kong, which was noted as being included with stock footage of the two titans fighting. The concept never got far enough for a full-fledged script to have been created. There are many questions related to the proposal still unknown as well, such as if DC Comics was ever actually approached with the idea or not. It is also not known to what degree the then-recent Batman TV series, which debuted two months after Sekizawa proposed this idea, might have played, if any. Also, a references to "Batgirl" are made in the concept, which would predate the Barbara Gordon version of the character that would later become synonymous with the name in 1966.

Tim Burton Batman Continues
During the early development of the canceled Catwoman spin-off, Burton expressed his interest in directing the third installment of the Batman film series that began with Batman in 1989. The Monkees lead drummer Micky Dolenz was attached to star as the Riddler, the film's main antagonist. Also, Harvey Dent's transformation into Two-Face was supposed to occur in the film, with Billy Dee Williams reprising his role as Dent from the first film, after turning down the offer to appear in Batman Returns. Along with these, Michelle Pfeiffer was attached to return as Catwoman, Marlon Wayans was attached to star as Robin, and Rene Russo was attached to star as Dr. Chase Meridian. However, when Warner Bros. observed that the script was just as gloomy as the previous film, they decided to put Joel Schumacher as the director of the third installment, leading to the release of Batman Forever, in which Burton served as producer, without being able to contribute ideas.

Batman: Assault on Arkham 2
In a 2016 interview, Jay Oliva mentioned that he had plans to make a sequel to Batman: Assault on Arkham, but following his departure from Warner Bros. Animation, the project was pulled off.

Batman: The Musical
In 2002, Burton, Jim Steinman, and David Ives had worked on a theater production called Batman: The Musical. Steinman has revealed five songs from the musical. The first is the opening theme for "Gotham City" and the entry of Batman with his tortured solo "The Graveyard Shift"; followed by "The Joker's Song (Where Does He Get All Those Wonderful Toys?)", "The Catwoman's Song (I Need All The Love I Can Get)", "We're Still the Children We Once Were" (the climactic sequence) and "In the Land of the Pig, the Butcher is King", sung by the corrupt bloodsuckers ruling Gotham; the last song mentioned here was covered on the Meat Loaf album Bat Out of Hell III: The Monster Is Loose. After production was canceled, these songs were released on the Batman: The Musical memorial site.

Gotham High
An animated series that reimagines Batman characters as high school students was in development in the late 2000s and early 2010s. A similar idea was used for the DC Super Hero Girls 2015 shorts and the 2019 animated series.

Batman: No Man's Land
Both in the mid and late 2000s, an animated TV show based on the "No Man's Land" storyline was put in development by producer James Tucker. Character designer Coran Stone worked on the project and made designs for the first version, but the project was ultimately scrapped for being "too dark", which led to Warner Bros. Animation and Cartoon Network focusing on Batman: The Brave and the Bold instead. Another attempt was made and some artwork was made as well, but the project was also canceled like the first attempt.

Batman: Arkham
After the success of Batman & Mr. Freeze: Subzero, Warner Bros. greenlighted the production of a third installment, entitled Batman: Arkham. Boyd Kirkland, the director of this film, was attached to write and direct. The film would have Batman and Robin facing off against a collection of Arkham Asylum escapees, in addition to Batman finding himself falling in love with a new love interest, planned to be voiced by Angie Harmon. The main cast of Batman: The Animated Series was attached to reprise their roles. Steven E. Gordon also drew some art concept for the film. The film was ultimately canceled in favor of Batman Beyond: Return of the Joker (which also featured Harmon), while Batman: Arkham eventually became a successful video game series by Rocksteady.

The Batman vs. Hush
A second film of The Batman titled The Batman vs. Hush that featured Hush as the main villain along with the Joker, the Penguin, the Riddler, Catwoman and Clayface was planned for a long time. The film ended up being scrapped. Before its cancellation, producer Alan Burnett had hopes of making one or two more DTV films based on The Batman. A similar film based on Batman: Hush ultimately came out in 2019 as part of the DC Animated Movie Universe.

Batman R.I.P. film
In 2015, Bruce Timm expressed interest in an animated adaptation of the Batman R.I.P. storyline.

Batman: Going Sane film
Writer J. M. DeMatteis was interested in adaptation of his Batman story arc Going Sane set in the DC Animated Movie Universe.

Arkham Asylum film
In 2015, director Jay Oliva expressed an interest in making an animated film adaptation of Arkham Asylum: A Serious House on Serious Earth, but Oliva departed from Warner Bros. Animation in 2017 before such adaptation could be made.

Untitled Batman Beyond: Return of the Joker sequel
A second Batman Beyond film was planned for release, but was finally scrapped due to the dark tones and controversies of Batman Beyond: Return of the Joker in 2001.

Untitled Batman Beyond animated film
Timm has mentioned that a Batman Beyond film is a possibility, and in August 2017, Tucker said in his Twitter account that discussions about a possible Batman Beyond film occurred several times at the studio.

DCEU Batman film
Ben Affleck, who was cast as Bruce Wayne / Batman and appeared in several DCEU projects, was in negotiations to direct, produce, star in, and co-write (with Geoff Johns) a Batman film in 2015 and was subsequently confirmed to direct it. His film would have been set after the events of Justice League and would have featured Slade Wilson / Deathstroke as a primary antagonist. Affleck stepped down as director in January 2017, and Matt Reeves was hired to direct and co-produce the film the next month. Under Reeves, the film shifted focus towards a younger, more inexperienced iteration of the character while drawing more from the comics' roots in noir and detective fiction. Affleck eventually left the project altogether, and was replaced by Robert Pattinson as Batman, allowing the film to drop its connections to the DCEU, establishing it in a new standalone universe.

Batgirl
A spin-off of the 1966 Batman show was noted in 1967 but did not go past a seven-minute presentation.

Batgirl: Year One
Batman: Year One's executive producer Bruce Timm and co-director Lauren Montgomery expressed interest in producing an animated film based on Batgirl: Year One, but DC canceled all plans for an adaptation.

Robin
A spin-off to Batman & Robin based on Robin was in the works, but was canceled due to the critical and box office failure of the 1997 film.

Nightwing: The Animated Series
An animated series featuring Nightwing was in development from Ki Hyun Ryu of The Boondocks and The Legend of Korra fame. The series was rejected in favor for Young Justice.

DCEU Nightwing film
By February 2017, a film centered around Dick Grayson / Nightwing was in development, with Chris McKay and Bill Dubuque signed on as director and screenwriter, respectively. Although the script was nearing its final draft, McKay said in 2021 that the project was delayed due to DC having "other priorities", but also reaffirmed his intentions to still make the film. He also said that the film could possibly be reworked to remove its connections to the DCEU continuity. The project was ultimately canceled in August 2023.

Catwoman: The Animated Series
In the massive success of Batman: The Animated Series, Fox Kids approached Bruce Timm on making a spin-off based on Catwoman. The series was scrapped in favor of Superman: The Animated Series.

Tim Burton's Catwoman spin-off
Batman Returns would be the last film in the Warner Bros. Batman film series that featured Burton and Michael Keaton as director and leading actor. With Batman Forever, Warner Bros. decided to go in a "lighter" direction to be more mainstream in the process of a family film. Burton had no interest in returning to direct a sequel, but was credited as producer. With Warner Bros. moving on development for Batman Forever in June 1993, a Catwoman spin-off was announced. Michelle Pfeiffer was to reprise her role, with the character not to appear in Forever because of her own spin-off.

Burton became attached as director, while producer Denise Di Novi and writer Daniel Waters also returned. In January 1994, Burton was unsure of his plans to direct Catwoman or an adaptation of "The Fall of the House of Usher". On June 6, 1995, Waters turned in his Catwoman script to Warner Bros., the same day Batman Forever was released. Burton was still being courted to direct. Waters joked: "Turning it in the day Batman Forever opened may not have been my best logistical move, in that it's the celebration of the fun-for-the-whole-family Batman. Catwoman is definitely not a fun-for-the-whole-family script". In an August 1995 interview, Pfeiffer reiterated her interest in the spin-off, but explained her priorities would be challenged as a mother and commitments to other projects. In January 1999, writer John August pitched his script, where Selina Kyle leaves Gotham and goes to her home town of Lake City. The film labored in development hell for years, with Pfeiffer replaced by Ashley Judd. The film ended up becoming the critically panned Catwoman (2004), starring Halle Berry.

Untitled direct-to-video Catwoman film
Around 2003, during the production of Batman: Mystery of the Batwoman, Warner Bros. approached Boyd Kirkland to write a Catwoman direct-to-video feature film as a tie-in with the 2004 live-action film. Although the script was written, the project was soon scrapped after the poor reception of the live-action film.

Direct-to-video Joker film
In 2016, Batman: The Killing Joke screenwriter Brian Azzarello said that he would like to adapt his novel Joker into an animated film.

DCEU Joker film
In 2018, a film featuring the Joker entered development. Jared Leto was attached as an executive producer in addition to reprising his role as the Joker, as well as being involved with hiring the film's production crew. By February 2019, the film had been canceled, and a Joker film unrelated to the DCEU was released later that year.

The Joker vs. the Powerpuff Girls
During the initial run of the Cartoon Network series The Powerpuff Girls, series creator Craig McCracken wanted to do a crossover episode featuring the Joker. On Tumblr, he said:

"When we did the original series I really wanted to do an episode where the Joker came to town and started committing crimes. The idea was that The Mayor was so excited to have a celebrity villain in town that he actually tried to thwart The Girls from stopping him because The Joker was finally putting Townsville on the map! We wanted to use Bruce Timm's designs from Batman: The Animated Series and get Mark Hamill to do the voice. Unfortunately Warner Bros. said no."

Superman III: Supergirl
Producer Ilya Salkind originally wrote a treatment for the third installment from the Superman film series starring Christopher Reeve that expanded the film's scope to a cosmic scale, introducing the villains Brainiac and Mister Mxyzptlk, as well as Supergirl. The original outline featured a father–daughter relationship between Brainiac and Supergirl and a romance between Superman and Supergirl, even though the two are cousins in the comics. Warner Bros. rejected the outline and made their own Superman III film, while Supergirl later appeared in her own film, portrayed by Helen Slater.

Superman V
Before the failure of Superman IV: The Quest for Peace, Cannon Films considered producing a fifth film with Albert Pyun as director. Cannon's bankruptcy in 1989 resulted in the film rights reverting to Ilya and Alexander Salkind. The story had Superman dying and resurrecting in the shrunken, bottled Krypton city of Kandor. The premise of Superman's death and rebirth coincidentally predated 1992's "The Death of Superman" comic book storyline. In 1993 Warner Bros. acquired the film rights entirely from the Salkinds.

Untitled Superman spin-off series
In June 2006, during an interview about Superman: Brainiac Attacks, writer Duane Capizzi mentioned a Superman series set in the same universe of The Batman, a possibility supported by Superman's revealed existence during the show's fifth season. Despite this, the expansion was never realized, and Capizzi never again mentioned the spin-off.

Untitled Superman project
At one point, an untitled Superman animated project was in conceptual stage, with designs by James Tucker.

Untitled Superman DC Nation project
Animator Genndy Tartakovsky, the creator of Samurai Jack and Star Wars: Clone Wars, was developing a Superman short for DC Nation back in 2013, but Cartoon Network's cancellation of the block in the following year resulted in this animated project getting cut. Early design work on the short was completed.

Superman: Red Son live action film
In 2017, Jordan Vogt-Roberts pitched a Red Son adaptation to Warner Brothers, as an "offshoot" of the DC Extended Universe with different actors for Superman and Batman, but "was told no". Mark Millar revealed that two friends of his had been approached by WB to direct a live-action Red Son. An animated film ultimately came out in 2020 as part of the DC Universe Animated Original Movies line.

Bizarro Superman film
In July 2009, Galaxy Quest team Dean Parisot and Robert Gordon were set to make a film about Bizarro Superman, but it never materialized.

Metropolis TV series
In January 2018, Gotham producers John Stephens and Danny Cannon and Warner Bros. Television were reportedly given a 13-episode straight-to-series order for the DC Universe series Metropolis, which follows Lois Lane and Lex Luthor as they investigate the world of fringe science and expose the city's dark and bizarre secrets. Later in May, the series was redeveloped, but no further news came of project's status.

Untitled Superman Family animated series
In May 2018, Vinton Heuck and Sean Galloway pitched an idea for a Superman Family animated series to Warner Bros. Animation but the pitch was rejected in favor of Harley Quinn animated series. The characters would have included Kong Kenan, Jon Kent, Damian Wayne, Mr. Mzyzptlk and Natasha Irons/Steel, among others.

DCEU Supergirl film
In 2018, a film centered around Kara Zor-El / Supergirl was in development with Oren Uziel penning the script. Three years later, Sasha Calle was cast in the role, with the character debuting in The Flash. The film was scheduled for Warner Bros. Pictures 2022–23 release slate.

Untitled Val-Zod series
By July 2021, a limited series centered around Val-Zod was in development for HBO Max and was to be set in DC Extended Universe. Michael B. Jordan was set to produce the series and also potentially star, while Darnell Metayer and Josh Peters were attached to write. Jordan previously pitched a feature film centered around an African-American Superman, only to place development on hold due to his busy production schedule.

Who's Afraid of Diana Prince TV pilot (1967)
A television series about Wonder Woman was proposed in 1967, resulting only in the production of a short pilot. The success of the Batman television series led Batman producer William Dozier to commission a pilot script by Stan Hart and Larry Siegel. Batman writer Stanley Ralph Ross was then asked to perform a re-write, after Hart and Siegel's script was deemed unsuitable. A portion of the pilot, under five minutes in length, was filmed by Greenway Productions, the company behind the Batman show under the title Who's Afraid of Diana Prince? The piece starred Ellie Wood Walker (Robert Walker Jr.'s wife) as Diana Prince, Linda Harrison as Diana's Wonder Woman alter ego and Maudie Prickett as Diana's mother. In the proposed series Diana Prince (not Wonder Woman) would have been the focus of the comedy. Diana, an awkward and rather plain young woman, lives with her mother close to a United States Air Force base. Much of the film consists of her mother berating Diana about not having a boyfriend. When her mother leaves the room, Diana changes into her Wonder Woman costume and admires her reflection in a mirror. What she sees is not Diana Prince, but rather a sexy super-heroic figure (played by Linda Harrison) who proceeds to preen and pose as the song "Oh, You Beautiful Doll" plays on the soundtrack. The pilot ends with Diana climbing out a window and flying away, indicating that, despite her apparent delusions regarding her alter ego, she does have some super powers. This pilot episode was never broadcast and the project was abandoned.

Filmation's Wonder Woman animated series
Animation studio Filmation considered making an animated series based on Wonder Woman in 1968 following the then-massive success of the TV series Batman, but nothing came out of it.

Wonder Woman: The Animated Series proposal
Director Boyd Kirkland approached Fox Kids about a Wonder Woman animated series in 1994, following the success of Batman: The Animated Series on the same channel, and would subsequently approach Kids' WB for his concept. Although an artwork for his pitch exists, the networks passed the proposal.

1999 NBC series
Lois & Clark: The New Adventures of Superman producer Deborah Joy LeVine attempted to do a Wonder Woman TV series in 1999 for NBC. The character was stated to be "a Greek history professor, a young and very bright woman having a hard time juggling her personal life with her work".

Wonder Woman 2 (2011)
There were plans to make a sequel to the 2009 direct-to-video film Wonder Woman, but was canceled due to poor DVD sales.

Wonder Woman TV pilot (2011)
A TV series based on Wonder Woman was in the works in 2010 that would have aired on NBC in 2011.

The CW's Amazon
In 2012, The CW, Warner Bros. Television and DC Comics were developing a new origin story for Wonder Woman called Amazon. A year later, the network pushed the pilot back until the 2014/15 season. The same year in May, the show was still in development, with a new script by Aron Eli Coleite, replacing Allan Heinberg, who wrote the previous script for the planned pilot, but in July, The Flash, by Greg Berlanti and Andrew Kreisberg was fast-tracked instead. Mark Pedowitz said that Amazon was delayed because they wanted a right script and interpretation for Wonder Woman. The project was canceled in early 2014, as Pedowitz confirmed to The Hollywood Reporter: "We did not go forward with it [...] it all depends on the script. We were very careful with Arrow, and we're being very careful with Flash [...] these are iconic characters, so we're going to be very careful with Wonder Woman. You only get one shot before you get bit". Pedowitz later said in August 2017 that the success of the feature film has killed any current attempts to bring the Amazonian warrior to the small screen on their channel.

Wonder Woman: World War II animated series
Producer Butch Lukic brought a proposal to Warner Bros. for Wonder Woman animated series set in the World War II, but was rejected due to the development of the live-action film Wonder Woman, which is set in the World War I. Some of the concepts for the story and setting were later incorporated in the animated film Justice Society: World War II, which was produced by Lukic.

Wonder Woman 1984 sequel and The Amazons spin-off film
After principal photography on Wonder Woman 1984 was completed, director and co-writer Patty Jenkins said that the plot for a third Wonder Woman film was written. She revealed that the story arc for Wonder Woman was planned over three films, with the third taking place in the present. Two days after 1984 was released, a third film was officially greenlit by Warner Bros. Pictures. Jenkins was set to return as director, with a script she wrote, while Gal Gadot was planned to reprise her role as the titular heroine. In autumn of 2022, Jenkins revealed that the script for the film was completed, while also stating that she had tentative plans for further installments. Filming was expected to begin in mid-2023, but in December the third film was revealed to be no longer moving forward because the script conflicted with the current plans for the DC Universe (DCU) franchise formulated by Gunn and Safran.

In addition to WW1984 sequel, a Wonder Woman spin-off The Amazons was also in development in 2019. The film would have been set between the second and third film and Patty Jenkins was attached as an executive producer. The project was also cancelled along with WW1984 sequel. A similar project is currently in development for DCU franchise, a television series named Paradise Lost, a prequel to Wonder Woman films and a political drama about the scheming and power struggles on the island of Themyscira.

Justice League of America (1990)
In 1990, Magnum Pictures developed a script for a Justice League TV show starring Booster Gold, Blue Beetle, Fire and Ice plus other members from the comic's Justice League International run.

Early attempt at a Justice League series
An early attempt at a Justice League television series was to feature lesser known superheroes, like the Question and Doctor Fate, that would have been part of the DC Animated Universe. The series was canceled in favor of Batman Beyond.

Justice League: Worlds Collide
Circa 2004, Bruce Timm announced that a direct-to-video Justice League feature film was in the works. The film was intended to make a bridge between the second season of Justice League to the first season of Justice League Unlimited. The film was planned to reveal how Wonder Woman acquired her invisible jet, and also planned to feature the Crime Syndicate as the main antagonists, an idea that was originally conceived for the two-part episode "A Better World", until the Syndicate was replaced by the Justice Lords. Dwayne McDuffie wrote the script and Andrea Romano assembled the cast, but Warner Bros. finally scrapped the project. In 2010, the film's plot was used for the non-DCAU film Justice League: Crisis on Two Earths, but removing all references to the continuity of the DC Animated Universe, and replacing John Stewart with Hal Jordan as the Justice League's Green Lantern.

Smallville Justice League spin-off
After the show's debut of Justice League in Smallville episode "Justice", there was a consideration for the Justice League spin-off, but it never came to fruition. Smallville writer Steven S. DeKnight revealed that a spin-off Justice League series was expected to happen after the episode "Justice", and would have continued the story of Oliver Queen and his new team.

JLA/Avengers film
In 2009, Bruce Timm has expressed interest in an animated film based on the JLA/Avengers crossover limited series. As of 2023, no updates have appeared since.

Animated adaptation by Bruce Timm
In 2009, Bruce Timm mentioned the possibility of an animated film of Crisis on Infinite Earths.

Live-action adaptation
In August 2022, when Warner Bros. Discovery merger was completed and Walter Hamada began preparations to leave his role as President of DC Films, it was revealed that prior to these events Warner Bros. had been developing a project based on Crisis on Infinite Earths. The plot would have similarly incorporated the multiverse and iterations of the main characters from alternate realities. Following Hamada's departure from the studios, the project's future realization is dependent on Gunn and Safran's plans for the franchise.

Untitled direct-to-video Justice League film
An untitled Justice League direct to DVD film was in the works in 2008, with a design by James Tucker.

Wonder Woman-centered Justice League film
In 2013, producer James Tucker has spoken about wanting a Wonder Woman-centered Justice League film.

Justice League: Gods and Monsters Chronicles season 2
A second season of the series was planned to be released in 2016 and would have featured ten episodes, but as of 2020, it has been shelved.

Untitled Justice League sequels
A sequels to Justice League (2017) were in development, with Zack Snyder attached to direct. By 2019, Warner Bros. had prioritized standalone films over the project. A sequel was once again under consideration while De Luca and Abdy were in charge of DC Films, before Gunn and Safran took over. Due to the Gunn and Safran's plans for the new franchise called DC Universe (DCU), none of the actors from Justice League were expected to reprise the roles in the new projects.

Kingdom Come animated film
In 2023, the creative team for Justice League: Warworld planned to develop a film adaptation of the Kingdom Come comic book mini-series, but the idea was discarded by James Gunn and Peter Safran after they were named CEOs of DC Studios.

Untitled Batman/Superman TV series
There were plans to make an animated series featuring Superman and Batman. It would have been an origin story.

Hanna Barbera's Teen Titans
In the 1980s, Hanna Barbera planned a TV series for the Teen Titans in the same universe as the Super Friends. The show would have featured Wonder Girl as the leader, along with Cyborg, Kid Flash, Changeling, Raven and Starfire.

DCAU's Teen Titans TV series
An early plan for the Teen Titans TV series was to include it into the DC Animated Universe. This idea was later abandoned in favor of being its own stand-alone series. This roster would have included Robin, Kid Flash, Wonder Girl, Speedy, Aqualad, the Flash, and Aquaman.

Teen Titans live action film
Around the time of the cancellation of Teen Titans (2003–06), WB was thinking of a live action film version of the Teen Titans with different looks, but later on it got scrapped and left behind a well-hidden Easter egg in 2007's I Am Legend, where Will Smith's character enters a local video store and in the background is a 2009 Teen Titans movie poster saying that the film is coming soon to DVD. This was turned into Teen Titans: Trouble in Tokyo. The live action film was in development by May 2007 and Robin was the only confirmed member. Akiva Goldsman and Mark Verheiden were attached to write.

Blackbirds
In September 2014, TNT announced a live-action Teen Titans television series originally titled Titans before it was renamed as Blackbirds. Akiva Goldsman and Marc Haimes wrote the script for the pilot. Filming was scheduled to begin mid-2015 but was postponed to October. The project was ultimately canceled in January 2016. The roster would have included Nightwing, Starfire, Raven, Hawk and Dove and Oracle.

Filmation's The Flash animated series
Animation studio Filmation considered to make The Flash animated series following the success of The Superman/Aquaman Hour of Adventure, but nothing came out of it.

The WB's Flash and Smallville Flash spin-off
In 2003, The WB was planning a Flash TV series with Todd Komarnicki signed on to write and executive produce it. Inspired by the 1960s science fiction drama The Time Tunnel, the series would have been a loose adaptation of the Flash, depicting him as a fresh-out-of-college Gotham City resident who uses his powers to travel backwards and forwards in time, going on missions. As with Smallville, the series would have eschewed superhero costumes altogether. According to Steven S. DeKnight, who was the writer for Smallville, there were creative differences over how a Flash television series should be handled, given the previous attempt at translating the character to the small screen in 1990, and that the studio wanted to create a Flash who was a "time-traveling college student from Gotham City". As a result, the series never materialized, and the character was ultimately brought to Smallville. At one point, there was a consideration for Smallville spin-off starring Bart Allen, but it never came to fruition.

Untitled The Flash sequel
Before the release of the film, a script for a sequel to The Flash was written by David Leslie Johnson-McGoldrick, who wrote the Aquaman films, in the event The Flash performed well. The script reportedly included Keaton's Batman and Calle's Supergirl. Warner Bros. was not expected to retain Miller for future films because of the actor's controversies and legal issues, although some Warner Bros. executives were open to continuing with Miller by January 2023, since they began treatment. DC Studios co-CEOs James Gunn and Peter Safran said there was potential for Miller to reprise their role in the new franchise, the DC Universe (DCU), but a decision on the character had not been made. Gunn confirmed that The Flash would reset the continuity of the DCEU and, alongside Aquaman and the Lost Kingdom, would lead into the DCU's first film, Superman (2025). Andy Muschietti said that he and Barbara wanted to be involved in a sequel, and have Miller to return in his role, and was interested to feature Eobard Thawne / Reverse-Flash as an antagonist for a sequel, while confirming that the character was responsible for Nora's death in this film.

The film was released in June 2023 and received mixed reviews, but was a box-office bomb, which left a sequel in question. Variety reported in October that no actors from Zack Snyder's DCEU films would be reprising their roles in the DCU (including Miller), effectively ending any chances of a sequel.

Early attempts of a live action Plastic Man film
A live action feature film featuring Plastic Man was in the works in 1992. It would have been produced by Amblin Entertainment, Warner Bros., and DreamWorks SKG, written by The Wachowskis, and to be directed by Brian Spicer, following the success of 1989's Batman. Nothing was made official until 14 years later, following the box-office disaster of The Wachowskis's Speed Racer, they decided to resurrect the old script and make the film with a release date set for December 2009. Both Jim Carrey and Bruce Campbell were considered for the role, until Keanu Reeves was announced to play Plastic Man. Nothing came out of this proposed 2009 film either. In 2013, rumors began to spread that David Tennant would play Plastic Man in the 2017 Justice League film as a comical character, something that The Flash's role in the film is. Later in December 2018, a new development of a Plastic Man film was announced as part of DC Extended Universe, with Amanda Idoko instead writing the screenplay and Robert Shaye executive producing. Cat Vasko was later hired to do rewrite of her screenplay, now reworked as a female-centered film.

Plastic Man animated film
Filmmaker and comic book writer Kevin Smith mentioned at Calgary Comic and Entertainment Expo that he met with Geoff Johns and pitched an animated Plastic Man film that he wrote for DC. There have been no further developments since. Jim Parsons was set to voice the character before the film got scrapped.

Plastic Man TV series
Several attempts to make a TV series based on Plastic Man were in development, one being in 1967 at Hal Seeger Productions, and another at Filmation.

Another attempt was in 2006 when Warner Bros. Animation and Cartoon Network commissioned an animated pilot titled "Puddle Trouble". They ultimately decided not to pick it up as a series, but the pilot can be seen on the Plastic Man: The Complete Collection DVD set.

Aquaman animated film
An animated film based on Aquaman was first mentioned by Bruce Timm in 2010, but was canceled due to marketing concerns. Filmmaker Adam Green even wrote a screenplay to Aquaman.

Early attempts of an Aquaman live action film
In 2003, Sunrise Entertainment made plans to produce an Aquaman film with Warner Bros., with first time writer Ben Grant set to write the screenplay. Nothing came out of this. Until a year, Leonardo DiCaprio signed on to the project that would have been produced by his production company, Appian Way Productions, but nothing came out of this either.

DCEU Black Manta spin-off film
In 2019, Warner Bros. announced a horror-themed spin-off from Aquaman focusing on the villainous Trench kingdom. Safran and James Wan were set to produce, with Noah Gardner and Aidan Fitzgerald writing the script. The film was planned to have a lower production budget than other DCEU films and was expected to be released before Aquaman and the Lost Kingdom. In April 2021, the project was canceled, though Warner Bros. said that it may be revived in the future. In October, Wan revealed that the initially announced name of The Trench was a working title, to misdirect the audience that the movie was secretly a Black Manta film.

Green Lantern: First Flight sequel
There were plans to make a sequel to Green Lantern: First Flight, but nothing came of it due to poor DVD sales.

Sinestro Corps War animated film
DC's executive editor Dan DiDio has expressed interest in seeing the 2007–2008 Sinestro Corps War comic storyline adapted.

Filmation's Green Arrow animated series
In the 1960s, studio Filmation considered to make Green Arrow animated series following the success of The Superman/Aquaman Hour of Adventure, but it did not come to fruition.

Green Arrow series
In 1990, according to TV Guide magazine at the time, Green Arrow live-action series was in development but nothing came of it.

Untitled Green Arrow animated film
Bruce Timm has said that he would like to do a Green Arrow film.

Smallville Green Arrow spin-off
During the sixth season of Smallville there was talk of spinning off the Green Arrow into his own series, but Justin Hartley refused to talk about the possibility of it because of his role on Smallville. The actor felt it his duty to respect what the show had accomplished in five seasons, and not "steal the spotlight" because there was "talk" of a spin-off after his two appearances. According to Hartley, "talking" was as far as the spin-off idea ever got. Alfred Gough said that the Green Arrow spin-off would have introduced the idea of Oliver acting in more of a "Professor X" role, where he takes in people with superpowers who have no place to go and trains them. The show's writer Steven S. DeKnight clarified that the series would have featured the introduction of new characters—such as Teen Titans and others from the DC Comics universe—as well as going into more depth for the background story of its primary characters, like Bart, Victor, and Arthur. As with the other potential series, this one never came to fruition.

Arrow spin-off Green Arrow & the Canaries
In 2019, a spin-off of Arrow was in development. It was to be a female-led spin-off series, with Katherine McNamara, Katie Cassidy, and Juliana Harkavy as the leads, reprising their roles from Arrow. An episode of Arrow's final season was to serve as a backdoor pilot for the potential series. Filming for the backdoor pilot began on October 21, with its title, along with the series, being named Green Arrow and the Canaries. No progress on the proposal was made and in January 2021, The CW officially passed on the spin-off; Guggenheim said this decision was made at the beginning of the COVID-19 pandemic, with Guggenheim feeling the pandemic was the "deciding factor" in not moving forward with the series. Having the series move to HBO Max was also reportedly "thoroughly explored", which was another contributing factor to the length of time it took to officially announce its cancellation.

Cyborg TV series
A planned Cyborg series was in development with Drake as the character.

DCEU Cyborg film
A solo Cyborg film in the DC Extended Universe was announced in October 2014, with Ray Fisher set to reprise his role from the then upcoming Batman v Superman: Dawn of Justice. Joe Morton was also set to reprise his role as Silas Stone. Though the film was consistently stated to be in production until 2020, by 2021, amidst a dispute between Ray Fisher and Warner Bros. Pictures regarding an investigation in the reshoot process on Justice League, Fisher said that he would not play the role in any film that has then President of DC Films Walter Hamada's involvement. DC Films responded that they will not recast the role. Variety later reported that Fisher will not reprise the role, along with other Justice League cast members in the DC Universe franchise.

Deadman film
Guillermo del Toro has taken interest in producing a film based on Deadman, supposedly from the only source. Variety reported that Nikolaj Arcel was set to direct the film. Since then, no updates have emerged for the project.

Deadman TV series
Following the success of X-Men in 2000, Warner Bros. Television announced a Deadman television film for TNT, also acting as a pilot for a potential television series. The project was still in development by 2003, but was later shelved. In 2011, WBTV hired Supernatural creator Eric Kripke to helm a Deadman television series for The CW, as the network was looking to commission a new superhero series. The following year, another superhero series debuted on the network. A Deadman series never materialized and Kripke has since moved on to other projects.

Rōnin film
In 1998, Darren Aronofsky signed a deal with New Line Cinema for a film adaptation of the graphic novel Rōnin. In 2007, Gianni Nunnari, producer of 300, was attached to produce and Sylvain White, director of Stomp the Yard, was hired to direct the Rōnin film adaptation. No further news came after its announcement.

Rōnin TV miniseries
In April 2014, the Syfy channel revealed their intention to adapt Rōnin into a miniseries. No further news came after its announcement.

Static Shock TV series
In October 2014, Warner Bros. intended to launch a live-action Static Shock program from Reginald Hudlin as part of the company's new Blue Ribbon Content digital division, and were eyeing Jaden Smith for the role of Virgil Hawkins/Static. Actor Tyler James Williams said in the following year that Jaden Smith was cast as Static, but was not confirmed by Blue Ribbon Content or Warner Bros. Hudlin, DC Comics Chief Creative Officer Geoff Johns, and Denys Cowan were collaborating on the live-action project. Since then, there have been no new announcements.

Static animated direct-to-video film
In 2017, when asked if the character could have a feature film set in the DC Animated Universe as part of the DC Universe Animated Original Movies, producer James Tucker responded that there was interest in Static on the studio. There have been no further discussions for such a project.

DCEU Static Shock film
At DC FanDome held in August 2020, a live-action film centered around Static was revealed to be in development, with Michael B. Jordan joining the production team as a producer alongside Reginald Hudlin in October. Several months later, Randy McKinnon was hired as screenwriter.

Comedic Lobo film
In the late 1990's, writer Jerrold E. Brown was writing a comedy film about Lobo with Joel Silver attached as producer.

Lobo: The Animated Series
Following his appearance on Superman: The Animated Series, a children's television show based on the character Lobo was in development at Kids WB. Due to executive issues, the series was converted into an adult-oriented Flash animated web series that was released in 2000.

Lobo TV series spin-off
Syfy announced a Lobo spin-off series from season 2 of Krypton in June 2019, with Krypton executive producer Cameron Welsh serving as executive producer/writer. Two months later, Syfy canceled the Lobo spin-off along with Krypton.

Lobo & Crush
Olan Rogers pitched an adult animated series based on Lobo and his daughter Crush to WB in 2020 before it was scrapped year later in September.

DCEU Lobo film
In September 2009, a film centered around Lobo was in development. Guy Ritchie and Brad Peyton were attached to direct at different times, while Dwayne Johnson was originally intended to star. After various iterations, in 2016, Jason Fuchs was hired as screenwriter. By February 2018, Michael Bay was attached to direct. Fuchs rewrote the script at Bay's request so the budget could be considerably lowered. In the autumn of 2022, Jason Momoa revealed that under the direction of Gunn and Safran, a project that he categorized as a "dream come true" was in development, which included his favorite comic book character. The project was later reported to be Lobo. In January 2023, Gunn and Safran addressed Momoa's involvement with future adaptations of the character, while stating that the actor would not portray two characters in the franchise.

Hourman TV series
In November 2013, a live-action Hourman series was revealed to be in development at The CW. Michael Caleo was writing the script, to executive produce the series alongside Dan Lin, and Jennifer Gwartz. The premise of the series "centers on a brilliant-yet-troubled pharmaceutical analyst who discovers that the visions that have plagued him since childhood are actually glimpses of tragic events occurring one hour in the future. Determined to win back his ex-wife and son, he heroically prevents these tragedies from unfolding, finding both purpose and redemption along the way". Since then, no progress on the series was made after its announcement.

DCEU Hourman film
In March 2021, a film focused on the character of Hourman, written by Gavin James and Neil Widener was in development.

New Gods animated film
Writer J. M. DeMatteis was interested in scripting a New Gods film set in the DC Animated Movie Universe.

DCEU New Gods film
In March 2018, Ava DuVernay signed on to direct a film centered around the New Gods. Initially with a script written by Kario Salem, Tom King was later brought to co-write the film with DuVernay. Darkseid was planned to be the main antagonist of the film, and the Female Furies were set to appear. New Gods was canceled in April 2021, despite Warner Bros. stating that it could be revived in the future. The project faced difficulties due to Darkseid's role in Zack Snyder's Justice League, and Warner Bros. wanted time to pass before the character appeared again. DuVernay later revealed that Mister Miracle, Big Barda, Granny Goodness, and Highfather would have appeared in the film.

Arrowverse Suicide Squad spin-off
In 2014, following the squad's debut episode in the second season of Arrow, Diggle's actor David Ramsey revealed that there was a talk of a spin-off focusing on Arrow's version of the Suicide Squad. However, Arrow co-producer and comic book writer Keto Shimizu commented in January 2015 that it did not seem as a possibility due to David Ayer's Suicide Squad film in development at the time. Series producer Greg Berlanti later confirmed that the team's inclusion within Arrow was used in order to test the audience's reception and interest prior to Ayer's film being put into production.

DCEU Suicide Squad spin-offs
Several Suicide Squad spin-offs set in DC Extended Universe were in various stages of development before they were canceled or delayed:
 * Deadshot, a spin-off film centered around Floyd Lawton / Deadshot was in development by 2016, with Will Smith reprising his role from Suicide Squad. Smith later left due to scheduling conflicts, and the character was written out of The Suicide Squad in order to allow Smith an opportunity to return in a future film. By 2022, the production on the film was delayed in favor of other projects due to the production payroll that Smith had requested.
 * Gotham City Sirens, a spin-off film based on the Gotham City Sirens (a team consisting of Harley Quinn, Catwoman, and Poison Ivy) was in development by 2016, with David Ayer signed on as director and co-producer from a script by Geneva Robertson-Dworet. Margot Robbie and Jared Leto were set to reprise their roles of Quinn and the Joker from Suicide Squad, with Robbie also taking the role of an executive producer. The film's development was later postponed in favor of Birds of Prey. The project was still on hold, and Robbie said that she chose to film Birds of Prey first to introduce audiences to lesser-known characters. She was still "pushing" forward with Gotham City Sirens, and hopes to explore the relationship of Quinn with Ivy and Catwoman, including a romantic relationship portrayed between Quinn and Ivy as in the comics.
 * By July 2017, a spin-off film featuring Harley Quinn and the Joker was in development with the working title of Harley Quinn vs. the Joker. Glenn Ficarra and John Requa were hired as co-writers, co-directors, and co-producers. By 2018, the script was completed and submitted to Warner Bros., and the production was scheduled to commence after Birds of Prey. The film was canceled in February 2019.
 * By May 2020, Warner Bros. was in talks to make another Harley Quinn spin-off film set after The Suicide Squad.

Untitled The Suicide Squad sequel and spin-offs
In 2021, Gunn said he had ideas for a sequel to The Suicide Squad and would have gone in a different direction by featuring a new Suicide Squad team. He considered to make this feature film after finishing on the first season of television series Peacemaker, but later canned the project following the new plans for DC Universe (DCU) franchise by him and Safran. Additionally, Gunn planned several television spin-offs following the release of the film and Peacemaker, with Safran commenting that some members of the Squad could appear in own spin-offs like Bloodsport or Ratcatcher. One of the projects that Gunn worked on was said to be separate from Amanda Waller series, with Gunn commenting that it could feature some characters from Peacemaker.

Starman television series
There was a television series planned based on Jack Knight adventures from the creators of Smallville and Birds of Prey. It would have featured both Jack and his father, been set in Opal City, and attempted to follow the comics as closely as possible. However, in 2003, after the failure of Birds of Prey, it was last referred to as being "indefinitely on hold". There has since been no sign that it will ever be produced.

Starman live-action web series
Machinima Inc. and DC Entertainment were producing a live-action web series based on an updated version of the original concept of Starman titled DC's Hero Project. No production updates were provided after its initial announcement.

Filmation's Doom Patrol animated series
During the 1960s, due to the success of the show The Superman/Aquaman Hour of Adventure, studio Filmation planned to make Doom Patrol animated series, but the plans were canceled due to CBS having animation rights to Batman and other DC characters.

Doom Patrol film
In 2006, Warner Bros. hired Adam Turner to pen a Doom Patrol screenplay. No director, cast, or release date were announced and the project was later canceled.

Filmation's Metal Men animated series
Due to the success of The Superman/Aquaman Hour of Adventure from the 1960s, Filmation planned to produce pilots for multiple DC heroes, with one of the concept drawings featuring the Metal Men. Those plans were canceled when CBS secured the animation rights to Batman in the wake of ABC's recent success with the Batman live-action television series at the time.

Metal Men film
A film adaptation of Metal Men entered development in 2007. Later in June 2012, Barry Sonnenfeld was in talks to direct the film. The project was in limbo until October 2021 when it was listed as part of DC Extended Universe.

Filmation's The Blackhawks animated series
A 1968 "presentation drawing" from Filmation depicts a red-shirted interpretation of Blackhawk and a member of the squadron fighting a group of aliens. Created during the height of The Superman/Aquaman Hour of Adventure's popularity, the artwork is believed to have been part of an attempt to convince CBS of the animation viability of other DC Comics properties.

The Blackhawks film
In the early 1980s, Steven Spielberg announced plans to direct a film adaptation of the Blackhawk comic book series, with Dan Aykroyd attached to play the title character, but the project was canceled and Spielberg chose to direct Raiders of the Lost Ark instead. In April 2018, Warner Bros. revived the Blackhawk project, with Spielberg returning to direct and produce and David Koepp writing the screenplay. Additionally, Spielberg was to co-produce the film with Kristie Macosko Krieger and Sue Kroll and was initially expected to begin after the completion of West Side Story.

Swamp Thing reboot
In 2009, Joel Silver announced plans to produce a reboot of Wes Craven Swamp Thing film from a story written by Akiva Goldsman. In April 2010, Vincenzo Natali was confirmed to direct, but on May 12, he decided to delay the Swamp Thing reboot to pursue other projects. Since then, nothing has been said about the project. Another reboot of Swamp Thing is currently in development as part of the DCU franchise.

Canceled Swamp Thing spin-off
Before the cancellation of the 2019 Swamp Thing series, there were plans to introduce Justice League Dark and create a spin-off series based on that team.

Captain Marvel/Shazam animated series proposals
Artist and writer Alex Ross pitched a Captain Marvel/Shazam animated series circa 1999 with Paul Dini. The proposal was brought to Cartoon Network, but was shelved for unknown reasons. The designs for the show would have been a mixture of the Bruce Timm style and the simple aesthetic of the original The Powerpuff Girls. Another proposal was a design work for an untitled Shazam project by Jake Castorena.

Untitled Black Adam sequel
After the release of Shazam spin-off Black Adam in October 2022, Dwayne Johnson confirmed future plans for Black Adam to fight Superman in the DCEU, and reaffirmed plans for the character to crossover with Shazam. Producers Hiram Garcia and Beau Flynn planned a fast-track production on the project. Due to the critical and commercial failure of the film, Johnson revealed in December that the character would not be a part of the initial slate of projects lined up for the new DC film universe under Gunn and Safran. He added that both DC Studios and his production company Seven Bucks Productions would continue collaborating in the future, and that the studio intended to "continue exploring the most valuable ways Black Adam can be utilized in future DC multiverse chapters".

Wonder Twins: Powers Activate animated series
Kat Hudson, lead designer on DC Super Hero Girls and other projects, developed a pitch for animated series based on the Wonder Twins. Despite the full pitch, the project ultimately did not come to fruition.

DCEU Wonder Twins film
In February 2022, a film centered around Zan and Jayne / the Wonder Twins entered development for HBO Max. Adam Sztykiel was slated to make his directorial debut and write the screenplay, with Marty Bowen and Wyck Godfrey serving as producers. By April, KJ Apa and Isabel May were cast in the lead roles of Zan and Jayna, respectively. Principal photography was scheduled to commence in Atlanta, Georgia in July, but the project was canceled in May following WarnerMedia's merge with Discovery Inc. and the creation of Warner Bros. Discovery. The CEO of the newly formed conglomerate, David Zaslav, felt that the film's estimated $75 million-plus budget would not bolster enough of a return as a straight-to-streaming release. Additionally, his directive mandate is that DC Films will first focus on theatrical releases, with internal criticism being that the project was conceived in a style deemed "too niche".

Dial "H" for Hero animated series
Marv Wolfman had pitched a Dial "H" for Hero TV show to Hanna-Barbera alongside the Teen Titans back in the 1980s.

#4Hero live-action series
Machinima Inc. and DC Entertainment were producing a live-action web series based on an updated version of Dial H for Hero. Titled #4Hero, the VFX-heavy comedy would have been about a young woman named Nellie Tribble who discovers a smartphone app that allows her to temporarily gain semi-useful superpowers dictated by whatever is trending at the moment. Since then, no production updates were announced.

Booster Gold
In 2011, Syfy ordered a live-action Booster Gold series, developed by Greg Berlanti and Andrew Kreisberg. Two years later, a pilot script was turned in but nothing came of it.

Unlimited Powers
In 1989, Danny Bilson and Paul Renal worked on a live-action series starring The Flash, Dr. Occult, Blok from the "Legion of Superheroes" and the daughter of Green Arrow. It didn't make it past the script phase.

Zatanna film
In 2005, Ice Princess screenwriter Hadley Davis was hired to write an action-comedy film about a teenage version of Zatanna. Warner Bros. later put Zatanna solo film as part of the DC Extended Universe in 2018. Zatanna was initially in development as an HBO Max-exclusive film, and Emerald Fennell was hired as screenwriter. The film was to be produced by J. J. Abrams. By October 2022, the film was initially scrapped at HBO Max, but later began being shopped around to other streaming services.

Blue Beetle TV series
Geoff Johns announced a live action TV series featuring the Jamie Reyes version of Blue Beetle. A test trailer was released with stuntman and actor Garrett Plotkin as Jaime Reyes. Scenes of this trailer were shown as part of the DC Nation block of programming in 2012 on Cartoon Network during the premiere of Green Lantern: The Animated Series. Since then, nothing has been announced about the project.

Spectre TV series
Fox announced in 2011 plans to develop a television series featuring the Spectre. There have been no further developments since.

The original Human Target TV series
The original version of Human Target was created by Warner Bros. Television and Pet Fly Productions, producers of The Flash and later The Sentinel for Paramount Pictures. The original pilot for the series was filmed in 1990 but ABC declined to pick up the series for the 1990-91 television season and this pilot never aired. In the original unaired pilot, musician Clarence Clemons, who was trying to establish himself as an actor, played Chance's pilot.

Harvey Shephard, then the president of Warner Bros. Television, told The New York Times in December 1991 that Human Target was intended for both American audiences and the international television market. A different pilot was filmed, resulting in the 1992 short-lived TV series Human Target.

Jonah Hex TV special
In 2000, 20th Century Fox developed a one-hour adaptation based on the character Jonah Hex to television with producers Akiva Goldsman and Robert Zappia involved, but the project never made it into production.

Early attempts at a Mad TV series
A 1974 animated television pilot based on the Mad magazine that used selected material from the magazine was commissioned by ABC, but the network decided to not broadcast it. Dick DeBartolo noted that "nobody wanted to sponsor a show that made fun of products that were advertised on TV, like car manufacturers". The program was instead created into a TV special and is available for online viewing.

In the mid-1980s, Hanna-Barbera developed another potential Mad animated television series which was never broadcast.

Sgt. Rock film
In the late 1980s and early 1990s, Arnold Schwarzenegger was attached to the title role of a Sgt. Rock film, despite the seeming incongruity of an Austrian actor playing an American G.I. in World War II. Screenplays were written by David Webb Peoples in 1987, Steven E. de Souza in 1988, John Milius in 1993, and Brian Helgeland in 1996, depicting Rock as having a German-American father and being able to speak German (a skill he uses to ambush the enemy). Producer Joel Silver still attempted to make a Sgt. Rock movie. John Cox has written the latest screenplay, which is not based on any of the previous screenplay drafts. Cox said that Schwarzenegger was no longer attached to star in the project. In April 2007, David Gambino, VP at Silver Pictures said: "The good news is we have a fantastic screenplay and everybody's really happy with it. It's really just about trying to attach cast right now and really decide what the movie is going to be, how we're going to make it". Bruce Willis was reportedly under consideration for the role. In December 2008, Guy Ritchie revealed that the film was shelved due to his work on Sherlock Holmes but confirmed that the Sgt. Rock film will be set during World War II and include the members of Easy Company. Silver later announced in February 2010 that the setting was changed from World War II to another battle in the near future. Since then, there have been no further announcements.

Project 13 TV series
In October 2017, The CW was developing a one-hour drama series based on Traci Thirteen and her father Dr. Terrance Thirteen, titled Project 13, with Elizabeth Banks attached as an executive producer. The project never came to fruition.

Secret Six TV series
In October 2018, Suits's Rick Muirragui was to write and produce a Secret Six TV series with Bill Lawrence's Doozer Productions for CBS. No production updates were provided and the project was later canceled.

Monolith film
Lionsgate announced in August 2016 that an adaptation of Monolith was in development with visual effects director Dave Wilson as director.

The Mighty film
In June 2011, Paramount Pictures acquired the rights to The Mighty. There have been no further developments since.

Kamandi TV series
In the late 1970s, an animated Kamandi television series was optioned, but was canceled before entering the production phase.

Justice League Dark, Constantine and Madame X DCEU projects
By November 2012, Guillermo del Toro signed a deal to write and direct a Justice League Dark film centered around DC Comics' supernatural characters, including John Constantine and Madame Xanadu. He was attached to the project until his exit in June 2015. Doug Liman was later attached to the project, but also later left due to scheduling conflicts. By 2020, the project was redeveloped as a series for HBO Max, with J. J. Abrams attached as an executive producer. Justice League Dark was intended to premiere after the individual team members were introduced in their own series, with the studios involved inspired to a similar approach as Marvel Television's Netflix series individually premiering before crossing over in The Defenders (2017). By 2023, the series was no longer moving forward.

In 2021, two series focusing on John Constantine and Madame Xanadu entered development at HBO Max. For Constantine, the series was to feature a younger version of the character in contemporary London and was planned to be horror-oriented. Guy Bolton was hired to write the pilot, while J. J. Abrams was attached as an executive producer. They were looking to the non-white actors for the lead role. For Madame X, Angela Robinson was attached to write and executive produce the series along with J. J. Abrams. Both shows were planned to tie in with Justice League Dark. The following year, both shows were no longer moving forward at HBO Max in favor of developing of a sequel to the film Constantine (2005), while the shows were shopped around to other streaming services.

DCEU Deathstroke film
In October 2017, a film centered around Slade Wilson / Deathstroke was announced to be in development with Gareth Evans attached as screenwriter and director from a story by Joe Manganiello, who was also set to reprise his role from Justice League. The project was greenlit after Evans impressed executives with his pitch. By April 2020, Evans was no longer in negotiations to work on the project, stating that he had never been contractually involved with its development. He described the story as a "dark" and "unforgiving" origin story, similar to Korean noir films. In March 2021, after numerous delays, Deathstroke was canceled because Warner Bros. did not consider it a priority. The project was brought back in discussions to revive it as part of Gunn and Safran's plans for DCU franchise. The project was confirmed to be canceled as of February 2024, when Manganiello revealed that Gunn convinced him to let the project and role go, but the comic book artist Jim Lee approached Manganiello to create a graphic novel series based on his unproduced screenplay once it was decided to "dismantle" the DCEU.

DCEU Black Canary film
By August 2021, an HBO Max-exclusive film centered around Dinah Lance / Black Canary entered development with Jurnee Smollett reprising her role from Birds of Prey, Misha Green writing the script, and Sue Kroll producing. Although it continued to be developed, the fate of the project is uncertain due to the plans for the new DCU franchise by Gunn and Safran.

Black Lightning spin-off Painkiller
In November 2020, The CW reportedly began to develop a backdoor pilot for a spin-off of Painkiller with Jordan Calloway reprising his role from Black Lightning. Three months later, Sibongile Mlambo, Alexander Hodge, and James Roch joined the cast. Later in May, The CW passed the project.

Strange Adventures series
In 2019, WarnerMedia and Greg Berlanti, the producer of The CW's Arrowverse, wanted to produce a "super hero anthology" series under the title Strange Adventures for the streaming service HBO Max. The series had reportedly been in development previously for the DC Universe streaming service. In August 2022, Kevin Smith, who was writing the script with Eric Carrasco, said that the series was canceled.

Stargirl spin-off Infinity Inc.
After the series Stargirl was canceled in 2022, it was revealed that a spin-off revolving around Infinity Inc. was planned and that it would have followed the Shade, Jennie, and Todd searching for the other offspring of the original Justice Society of America (JSA) members and help them with their potential abilities.

Justice U spin-off
An Arrowverse series titled Justice U that would have starred David Ramsey was in development by January 2022, developed by Michael Narducci and Zoanne Clack. The premise of the proposed show would have shown John Diggle recruiting five young meta humans to live undercover as freshmen at a prestigious university, with Diggle overseeing their education and training. Ramsey was attached to direct the pilot if ordered, with Greg Berlanti, Sarah Schechter, David Madden, and Geoff Johns executive producing alongside Narducci and Clack. The CW passed the proposal one year later in May.

Wonder Girl series
In the late 2020, The CW, Greg Berlanti, and Dailyn Rodriguez intended to develop a Wonder Girl TV series set in Arrowverse, focusing on the Yara Flor incarnation of Wonder Girl. The CW ultimately decided not to move forward with the series.

Filmation's Metamorpho and B'wana Beast animated series
In the 1960s, due to the success of the show The Superman/Aquaman Hour of Adventure, Filmation considered to make a Metamorpho and B'wana Beast animated shows, which also included a concept drawings, but the plans were canceled when CBS secured the animation rights to Batman in the wake of ABC's recent success with the Batman live action television series.

Hawkman film
A Hawkman film was in development by Warner Bros. in the early 2010s, but nothing came of it.

Harley Quinn & Poison Ivy animated series
An animated series starring Harley Quinn and Poison Ivy was in development in 2001, but never made it passed early pre-production. Character designs for the series were done by Shane Glines.

Mortal Kombat vs. DC Universe
Jeremy Adams, who worked on the Mortal Kombat Legends animated films, revealed that he pitched a Mortal Kombat vs. DC Universe animated film based on the videogame of the same name for Warner but it got rejected.