The Flash season 9

The ninth and final season of the American superhero television series The Flash, which is based on the DC Comics character Barry Allen / Flash, premiered on February 8, 2023. The season follows Barry facing against his nemeses Red Death, Bloodwork, and Cobalt Blue. It is set in the Arrowverse, sharing continuity with the other television series of the universe. It also acts as the conclusion of the Arrowverse. The season is produced by Berlanti Productions, Warner Bros. Television, and DC Entertainment, with Eric Wallace serving as showrunner.

The season was announced on March 22, 2022, and later confirmed to be the final season on August 1. Filming for the season began in September 2022 and concluded in March 2023. Grant Gustin stars as Barry Allen / Flash, with principal cast members Candice Patton, Danielle Panabaker, Danielle Nicolet, Kayla Compton, and Brandon McKnight also returning from previous seasons, while Jon Cor was promoted to series regular from his recurring status in the previous two seasons.

Episodes
Season nine is broken into two "Graphic Novel" storyline arcs, known as the eighth and ninth graphic novels respectively; this numbering continues from the first seven "Graphic Novels" established in the previous three seasons.

Main

 * Grant Gustin as Barry Allen / The Flash
 * Candice Patton as Iris West-Allen
 * Danielle Panabaker as Khione and Caitlin Snow
 * Danielle Nicolet as Cecile Horton / Virtue
 * Kayla Compton as Allegra Garcia
 * Brandon McKnight as Chester P. "Chuck" Runk
 * Jon Cor as Mark Blaine / Chillblaine

Recurring

 * Jesse L. Martin as Joe West
 * Carmen Moore as Kristen Kramer
 * Rachel Drance as Taylor Downs
 * Richard Harmon as Owen Mercer / Captain Boomerang
 * Stephanie Izsak as Daisy Korber
 * Andy Mientus as Hartley Rathaway / Pied Piper
 * Magda Apanowicz as Andrea Wozzeck / Fiddler
 * Rick Cosnett as Eddie Thawne / "Malcolm Gilmore" / Cobalt Blue
 * Michelle Harrison as Nora Allen, the Speed Force and Joan Williams

Guest
• Josh Chambers as Joey Monteleone / Tar Pit

• Javicia Leslie as Ryan Wilder / Batwoman and Ryan Wilder / Red Death (Earth-4125)

• Max Adler as Jaco Birch / Hotness

• Damion Poitier as Keith Kanyon / Goldface

• Alexandria Wailes as Michelle Amar / Murmur

• Paul Anthony as Roy Bivolo / Rainbow Raider

• David Sobolov as the voice of Gorilla Grodd

• Sugar Lyn Beard as Rebecca Sharpe / Hazard

• Drew Henderson as Dominic Stewart

• Andrew Francis as Tony Stewart

• Nicole Maines as Nia Nal / Dreamer

• Shayan Bayat as Aariz Mousa

• Lily Yawson as Original Dreamer

• Diana Bang as Lady Chronos

• Peter Kelamis as Inspector Howard

• Natalie Moon as Inspector Jane

• Stephen Amell as Oliver Queen / Green Arrow / Spectre

• David Ramsey as John Diggle / Spartan

• Keiynan Lonsdale as Wally West / Kid Flash

• Sendhil Ramamurthy as Ramsey Rosso / Bloodwork

• Patrick Sabongui as David Singh

• Matt Letscher as Eobard Thawne / Reverse-Flash

• John Wesley Shipp as Henry Allen and Jay Garrick / Flash

• Victor Garber as Martin Stein (voice)

• Jessica Parker Kennedy as Nora West-Allen / XS

• Tom Cavanagh as Harrison Wells and Eobard Thawne / Reverse-Flash

• Teddy Sears as Hunter Zolomon / Zoom

• * Tony Todd as the voice of Zoom

• Piper Curda as Avery Ho

• Karan Oberoi as August Heart / Godspeed

• Tobin Bell as the voice of Savitar

Development
In April 2020, series star Grant Gustin said there had been discussions about renewing the series through a ninth season, but those were stalled due to the COVID-19 pandemic. In January 2022, when the eighth season was in its mid-season hiatus, Gustin signed a one-year deal for 15 episodes for a ninth season, with his salary increased to $200,000 per episode. On March 22, 2022, The CW renewed the series for a ninth season. On August 1, it was announced that it would be the final season of the series, with an abbreviated 13-episode order. Showrunner Eric Wallace stated that the cast and crew had originally expected the series to end with the eighth season, but after the ninth season was ordered, Wallace rewrote the season eight finale to not be a series finale.

Writing
Prior to learning that the ninth season would be the series' last and that it would have only 13 episodes, Wallace created additional storylines he hoped to include in the ninth season and a potential tenth season. These would have included a wrap-up to Legends of Tomorrow, the appearance of Max Mercury, an original storyline titled The Forever War, an adaptation of the Blackest Night storyline, and a storyline featuring the Justice League fighting Despero in another alien invasion. After the final 13 episodes were ordered, Wallace's plans for the 200th episode were moved to the series finale.

Casting
Main cast members Gustin, Candice Patton, Danielle Nicolet, Kayla Compton and Brandon McKnight return as Barry Allen / The Flash, Iris West-Allen, Cecile Horton, Allegra Garcia and Chester P. Runk. Jesse L. Martin, who portrayed Joe West throughout the series, exited as a regular, though he was expected to recur in the season. In October 2022, Jon Cor was promoted to series regular for the season.

Danielle Panabaker, who portrayed Caitlin Snow and Frost in previous seasons, was reported to be returning, but was later confirmed to be playing a new character whose identity was later revealed in the second episode. Ahead of this, Panabaker stated that this character would be called Snow at the beginning of the season; Snow was later revealed to be using the name Khione. Carlos Valdes was unable to reprise his role as Cisco Ramon / Vibe for the finale due to scheduling conflicts with his starring role in the Hulu series Up Here.

Katee Sackhoff, who played Amunet Black in the fourth season, expressed interest in returning for the ninth season, but wasn't invited back to the show for reasons unknown, which Sackhoff theorizes as some involved in the show's production not liking her.

Filming
Filming began on September 14, 2022, and concluded on March 6, 2023.

Release
The season premiered on February 8, 2023, and the finale aired on May 24, 2023.