Battle Spirits: Saikyou Ginga Ultimate Zero

Battle Spirits: Saikyō Ginga Ultimate Zero (最強銀河究極ゼロ～バトルスピリッツ～) is a 2013 Japanese anime series based on the Battle Spirits Trading Card Game. It was produced by Sunrise and Nagoya Broadcasting Network and aired on TV Asahi from September 22, 2013, to September 21, 2014 It replaced Battle Spirits: Sword Eyes in the Nichi Asa Kids Time 7:00 timeslot, and was succeeded by Battle Spirits: Burning Soul. It has not been released outside Japan until 2019, ViuTV aired this series in Hong Kong with Cantonese dubbing.

This is the last Battle Spirits anime to be animated by Sunrise, as it is aired two years before the founding of BN Pictures.

Plot
Card Quester "Rei the Number One Star" is searching for the Ultimate Battle Spirits, a treasure somewhere in space. With him are the mini dragon Mugen, robot Salt, and the April siblings Laila and Rikuto. Rei transforms into Zero while on the battlefield, using different colors and Ultimate cards to defeat his opponents. While he heads toward the Ultimate Battle Spirits, he settles conflict around the galaxy, befriends various outlaws, and clashes with the Guild, an organization controlling space.

Characters

 * Rei the Number One Star (一番星のレイ)

The protagonist. Searching for the Ultimate Battle Spirits, Rei travels through space in The Number One Star Ship (一番星号) with his friends. He is an almost unmatched card battler and is obsessed with the number 1. Generally easygoing, Rei tries to befriend anyone who he battles with. He eats almost nothing but pizza and Stardust Cola filled with ice, and will drink straight from the bottle when he is troubled or sad. He has a fear of ghosts, though he denies it. Rei also has an Ultimate symbol inside of him which guides him to Ultimates, but knows nothing about it. He has no memory of his past and claims to have no interest in remembering it; his earliest memory is of waking up with Ultimate-Siegfried and Ultimate-Odin in hand. After joining up with Kiriga in the Treasure Ship, a physical manifestation of his past self confronts him and forces him to accept his past. At one point, Rei traveled together with Kiriga and Miroku in the Treasure Ship, but lost his memory after sacrificing himself for Kiriga. Despite this, he wants to return to being friends with Miroku.

When playing Battle Spirits, Rei changes forms and personalities according to what color deck he uses.
 * Zero the Burning (灼熱のゼロ)
 * Key Cards: Ultimate-Siegfried, Ultimate-Siegfrieden, Ultimate-Siegwurm-Nova
 * Uses a red deck. Burning has a hot-blooded personality and easily gets fired up. Introduces himself as "The Number One heated guy in space", and his victory phrase is "The Number One Star shines bright red! There's no one stronger than me!".
 * Zero the Silver (白銀のゼロ)
 * Key Cards: Ultimate-Odin, Ultimate-Siegfrieden
 * Uses a white deck. Silver acts much more rationally than other Zero forms and calls his spirits "my troops". Introduces himself as "The Number One sublime man in space", and his victory phrase is "The Number One Star shines white, let the victory song roar out!".
 * Zero the Hurricane (疾風のゼロ)
 * Key Cards: Ultimate-Kingtaurus
 * Uses a green deck. Hurricane constantly talks about the wind and "whooshes" around the battlefield. His victory phrase is "Smooth sailing, it's a tailwind!".
 * Zero the Flash (紫電のゼロ)
 * Key Cards: Ultimate-Beelzebeat
 * Uses a purple deck. Flash acts gentlemanly and suave in manner and drinks tea during battles. His victory phrase is "Let us meet again in a wonderful hell.".
 * Zero the Azure (紺碧のゼロ)
 * Key Cards: Ultimate-Alexander
 * Uses a blue deck. Azure talks roughly and uses "ore-sama" to refer to himself. His victory phrase is "No enemy can block the path to my boundless future!"
 * Zero the Glint (閃光のゼロ)
 * Key Cards: Ultimate-Rean
 * Uses a yellow deck. Glint treats battles as a stage performance and speaks in broken English. His victory phrase is "That was Zero the Glint!"
 * Zero the Ultimate (究極のゼロ)
 * Key Cards: Ultimate-Mugendragon, Ultimate-Drian, Ultimate-Chocodra
 * Uses a red Tri-Dragon Deity/Ultimate Dragon based deck. Unlike other forms, Zero the Ultimate is Rei himself. However, he flashes to other Zeros, Eris, or Kiriga when playing their key cards.


 * Kiriga the Shooting Star (流れ星のキリガ/キリガ・ザ・シューティングスター)
 * Key Cards: Ultimate-Castle-Golem, Ultimate-Grand-Woden, Ultimate-Odin, Ultimate-Sagitto-Apollodragon
 * Key Cards: Ultimate-Castle-Golem, Ultimate-Grand-Woden, Ultimate-Odin, Ultimate-Sagitto-Apollodragon

A young man said to be the strongest Card Quester of the Guild. Kiriga travels through space in The Meteor (流星号) with his dragon partner Ian, carrying out orders from Miroku. He is typically calm and collected, but shows a righteous side when dealing with criminals. He views battling as work rather than something to be enjoyed before losing to Rei. Afterwards, he becomes frenzied and gains Ultimate-Grand-Woden, and uses its power to win Rei's Ultimate-Odin. Like Rei, Kiriga has a mysterious symbol inside him and has no memory. However, he begins to regain fragments when battling against Rukinos. He is called by Ultimate-Sagitto-Apollodragon and soon after leaves the Guild to pursue his past, joined by Fairy and Samantha. He at last regains his memory as well as the Treasure Ship after defeating Dulfer. In the past he traveled with Rei and Miroku on the Treasure Ship, and is seen to frequently write poems. Kiriga has three battle forms: blue, white, and red.


 * Mugen (ムゲン)

Rei's mini dragon partner. He has a straightforward personality, in contrast to Rei's lax behavior, though is more arrogant. Mugen has the ability to fart at will, typically using this to punish the Triumvirate. He is a big fan of Magical Star Saki, as she resembles his childhood friend Stardra. On his homeworld, he was ostracized for rejecting a human partner. He chooses to go with Rei after being told that he is the "number one bright red" dragon. Mugen transforms into a card when Rei battles, and goes through several evolutions through the series: Mugendra, Mugendragon, Mugendragon-Nova, and Ultimate-Mugendragon.


 * Rikuto April (リクト・エイプリル)
 * Key Cards: Nijinoko, The KnightHero Swordius-Arthur
 * Key Cards: Nijinoko, The KnightHero Swordius-Arthur

Laila's younger brother and a novice at Battle Spirits. Rikuto holds onto the Space Compass, given to him by his grandfather. Rikuto looks up to Rei, and after finding out his goal, asks to come with him as his travelling companion. During Rei's battles, he sometimes launches into an explanatory segment called "Rikuto-sensei's Battle Spirits Lecture". He is a card collector and owns a number of X-Rares, with the KnightHero Swordius-Arthur being one of his favourites, though is not adept at using them.


 * Laila April (ライラ・エイプリル)
 * Key Cards: Knight-Pentan
 * Key Cards: Knight-Pentan

Rikuto's older sister and a Card Quester who along with her brother joins Rei as his travelling companion. She is a clean freak and insists on keeping the Number One Star Ship tidy. Laila admires Eris, whose father was rivals with her grandfather. She lives by "Laila's Rules" at all times, sometimes announcing them to make others follow her example. She loves Pentans and uses a Pentan deck, with, after advice from Rei, Knight-Pentan as her key spirit.


 * Salt (ソルト)
 * Key Cards: The IronHero Saigord-Golem
 * Key Cards: The IronHero Saigord-Golem

The Number One Star Ship's cooking robot. Salt makes pizza exclusively, turning even the simplest dishes into pizza. He frequently rhymes and makes puns. Formerly the cook of the COWCOW, but left the ship on a journey to improve his skills. Afterwards, he took on various jobs and was left in a trash heap, where he met Rei. Like Mugen, he is a fan of Magical.


 * Ian (イアン)

Kiriga's mini dragon partner. Like Kiriga, Ian is very calm, but has a pompous side. He acts as a servant to Kiriga, and is shown to be very caring and loyal to him. Ian transforms into a card when Kiriga battles, and goes through several evolutions through the series: Drian, Star Drian, Meteodrian, and Ultimate-Drian.


 * Fairy (ファーリー)

A student at Amaterasu Academy. Her late father was friends with Kiriga, which leads him to visit her from time to time. During spring break, she and Samantha go with Kiriga to investigate a hint to his memory left by her father. She and Samantha return to school before entering the fourth class of space, though briefly return through Denebola's power. She appears to have a crush on Kiriga.


 * Samantha (サマンサ)

A student at Amaterasu Academy and Fairy's friend. She appears to have extensive technical knowledge and frequently mentions her "ranks" in various skills, notably being a third rank in bomb-making.


 * Eris the Morning Star (明の明星のエリス)
 * Key Cards: Ultimate-Valiero, The HolyDragonEmperor Ultimate-Saviour
 * Key Cards: Ultimate-Valiero, The HolyDragonEmperor Ultimate-Saviour

A space pirate famed throughout the galaxy. Searching for the Ultimate Battle Spirits, Eris travels through space in The Venus (ヴィーナス号). She has a strong sense of justice and battles against criminals to regain stolen items, which earns her the admiration of many. Her father had a rivalry with Davil April, leading her to challenge Laila. Eris has no interest in romance, claiming that her love is the sea of space. She is called by Ultimate-Saviour and led to Chocola despite initially not having an Ultimate symbol. Later she takes Miroku's former spot as one of the main pilots of the Treasure Ship. Eris has two battle forms, yellow and red.


 * Chocola (ショコラ)

Eris' mini dragon partner. Chocola is hatched after Eris battles Rukinos. She refers to herself as a lady, though is rather childish. She is overly fond of chocolate and all things sweet. Chocola transforms into the spirit card Chocodra when Eris battles, later evolving into Ultimate-Chocodra.


 * Garbo (ガルボ)

A space pirate and Eris' subordinate.


 * Marlene (マレーネ)

A space pirate and Eris' subordinate. The youngest of 10 siblings. She is also friends with Rikuto and gifts him Nijinoko.

There are about 30 other unnamed crewmembers aboard The Venus with minor speaking roles.


 * Miroku (ミロク)
 * Key Cards: The UltimateHeroDragon Ultimate-Yamato
 * Key Cards: The UltimateHeroDragon Ultimate-Yamato

The main antagonist of the series and boss of the Guild. He wears a visor that covers his eyes and usually speaks through a monitor. Miroku wants the Ultimate Battle Spirits for unknown reasons and has the Guild chase after it. He claims to know all things that happen in space, including Rei's past. He holds Kiriga's memories and uses it to control him. After having Kiriga retrieve the Reverse Galaxy Documents, he summons Rukinos and later Denebola from another dimension. It is revealed that he was a former friend and travelling companion of Rei and Kiriga, who left them thinking that he was bringing them down. In the midst of despair, he accepted Nakes' power and his eyes became blue, purple and white on the left, and green, red, and yellow on the right. Miroku wants everything in the universe and works with Nakes to achieve this.

The Galaxy Triumvirate (銀河三羽がらす) is a recurring antagonistic group within the Guild that constantly chases after The Number One Star Ship for the Space Compass. The group has to date never won a battle against Rei, despite having collectively battled him nearly 20 times. They are former theater performers from Planet ASAKUSA. They serve under Rukinos and Denebola, and finally Miroku personally after their respective appearances. The group usually provides comic relief within the series.


 * Watari the Flowing (流しのワタリ)
 * Key Cards: The CharismaHero Mibrock-Braver, The IceHero Mibrock-Baragan, Noisy Raven
 * A short man who plays a ukulele and speaks in a singsong voice. He has a habit of saying "disappointing". He is a big fan of Magical, to the point where he and the Triumvirate once pretend to kidnap her to let her rest. Uses a white Burst deck.
 * A short man who plays a ukulele and speaks in a singsong voice. He has a habit of saying "disappointing". He is a big fan of Magical, to the point where he and the Triumvirate once pretend to kidnap her to let her rest. Uses a white Burst deck.


 * Tsuruhashi the Waking (目覚めのツルハシ)
 * Key Cards: Slave-GaiAsura, Cape Rocker
 * A lanky man who speaks entirely in rap and ends his sentences with "YO". Uses a red Awaken deck.
 * A lanky man who speaks entirely in rap and ends his sentences with "YO". Uses a red Awaken deck.


 * Hashibuto the Angry (怒りのハシブト)
 * Key Cards: The SevenShogun Beelzebeat, The CurseHero Chaotic-Seimei, Jungle Crow Demon
 * A heavyset transvestite. Uses a purple Curse deck. Arguably the strongest of the Trumvirate.
 * A heavyset transvestite. Uses a purple Curse deck. Arguably the strongest of the Trumvirate.

A branch of the Guild which is known for its cruelty. It is disbanded when Rei single-handedly defeats all of the members, but is reinstated at the end of the series with Hansoro as an additional member.
 * Basilla the Dawn (暁のバジーラ)
 * Key Cards: Ultimate-Desperado
 * An antagonist and the boss of the Seven Galaxy Generals. He speaks formally, with many references to meals, and insists that he be called "Lord". He takes the handles from Planet Faucet to use them as weight stones for pickled vegetables, which he loves to eat. After losing against Rei, he relinquishes the handles. Because none of the Seven Galaxy Generals could win a battle with Rei, Basila disbands the group and sets off on a journey. Afterwards, he lovingly grows vegetables on a remote planet until Hansoro finds him and takes his deck. When Hansoro loses his memory, Basilla takes him in and makes him a member of the Eight Galaxy Generals. Uses a purple core removal deck.
 * An antagonist and the boss of the Seven Galaxy Generals. He speaks formally, with many references to meals, and insists that he be called "Lord". He takes the handles from Planet Faucet to use them as weight stones for pickled vegetables, which he loves to eat. After losing against Rei, he relinquishes the handles. Because none of the Seven Galaxy Generals could win a battle with Rei, Basila disbands the group and sets off on a journey. Afterwards, he lovingly grows vegetables on a remote planet until Hansoro finds him and takes his deck. When Hansoro loses his memory, Basilla takes him in and makes him a member of the Eight Galaxy Generals. Uses a purple core removal deck.


 * Zard the Invincible (不滅のザード)
 * Key Cards: The EvilSacredBeast Chaos-Pegasuros, The BlackInsectDemonlord Diabolica-Mantis, The DarkDragon Dark Tyrannosaura
 * An antagonist and second-in-command of the Seven Galaxy Generals. First seen on Planet Ice Cube battling for the Ultimate Crystal there, and is about to claim it for the Guild before Rei shows up and takes it. When the Seven Galaxy Generals are disbanded, Zard resents Basilla, having wanted to become the new boss of the group instead. Along with the Triumvirate, he attempts to steal Rei's decks. He reappears during the Justice Cup, and appears to have reformed his ways. Uses a yellow/green and later red rush deck. He rejoins the Eight Galaxy Generals along with his superior Basilla and new member Hansoro.
 * An antagonist and second-in-command of the Seven Galaxy Generals. First seen on Planet Ice Cube battling for the Ultimate Crystal there, and is about to claim it for the Guild before Rei shows up and takes it. When the Seven Galaxy Generals are disbanded, Zard resents Basilla, having wanted to become the new boss of the group instead. Along with the Triumvirate, he attempts to steal Rei's decks. He reappears during the Justice Cup, and appears to have reformed his ways. Uses a yellow/green and later red rush deck. He rejoins the Eight Galaxy Generals along with his superior Basilla and new member Hansoro.


 * Almeida the Evil Eye (邪眼のアルメイダ)
 * Key Cards: The BlackInsectDemonlord Diabolica-Mantis
 * One of the Seven Galaxy Generals. Almeida rules over the people of Planet Gunrock, making them dig up Crystals in the mines. The Triumvirate trick him into battling Rei, and as a result he loses control of the planet. He teams up with Goin to defeat Rei, but to no avail. Uses a green high speed deck. He later rejoins the Eight Galaxy Generals.
 * One of the Seven Galaxy Generals. Almeida rules over the people of Planet Gunrock, making them dig up Crystals in the mines. The Triumvirate trick him into battling Rei, and as a result he loses control of the planet. He teams up with Goin to defeat Rei, but to no avail. Uses a green high speed deck. He later rejoins the Eight Galaxy Generals.


 * Goin the Bulldozer (ゴリ押しのゴーイン)
 * Key Cards: The SevenShogun Asmodios
 * One of the Seven Galaxy Generals. Goin, like Almeida, is on Planet Gunrock, and attempts to defeat Rei. After losing to Rei, he is forced to leave the planet. Uses a purple deck. He later rejoins the Eight Galaxy Generals.
 * One of the Seven Galaxy Generals. Goin, like Almeida, is on Planet Gunrock, and attempts to defeat Rei. After losing to Rei, he is forced to leave the planet. Uses a purple deck. He later rejoins the Eight Galaxy Generals.


 * Gedam the Gale (烈風のゲダム)
 * One of the Seven Galaxy Generals. Usually he serves at Basilla's side. Uses a white deck.
 * One of the Seven Galaxy Generals. Usually he serves at Basilla's side. Uses a white deck.


 * Pollock the Drizzling (霧雨のポロック)
 * One of the Seven Galaxy Generals.
 * One of the Seven Galaxy Generals.


 * Kuulge the Cold Rice (冷や飯のクールゲ)
 * One of the Seven Galaxy Generals. Speaks in grunts. He is from the unnamed water planet in the Third Class.


 * Hansoro (ハンソ郎)
 * Key Cards: Slave Gai-Asura, The PhantomStarDragon Gai-Asura, Ultimate-Gai-Asura
 * One of the main antagonists and a high-ranking Guild member who works directly under Miroku. He is called "teacher" by the Triumvirate. After battling Rei and Kiriga, he becomes convinced that the Guild is going in the wrong direction and confronts Miroku. Hansoro is defeated and loses his memory. He goes on a quest to regain his memory, and is taken in by Basilla whom he had formerly defeated. Hansoro becomes the eighth member of the reformed Eight Galaxy Generals, and in the epilogue becomes the new head of the Guild.
 * One of the main antagonists and a high-ranking Guild member who works directly under Miroku. He is called "teacher" by the Triumvirate. After battling Rei and Kiriga, he becomes convinced that the Guild is going in the wrong direction and confronts Miroku. Hansoro is defeated and loses his memory. He goes on a quest to regain his memory, and is taken in by Basilla whom he had formerly defeated. Hansoro becomes the eighth member of the reformed Eight Galaxy Generals, and in the epilogue becomes the new head of the Guild.


 * Rukinos the Cancer (蟹座のルキノス)
 * Key Cards: The CancerAstralArmored BraveCancer, The ShellBladeGeneral Legioss
 * One of the main antagonists and an invader from another dimension that Miroku calls using the Reverse Galaxy Documents. Rukinos' soul possesses a crab doll, and he consumes crab excessively. He destroys the gate to the third class and defeats both Kiriga and Eris, however with the two of them getting revenge later with their newfound Tri-Dragon Deity Ultimates. He participates in the Justice Cup, but loses to Magical. He is used by Miroku to summon Nakes, before being saved by the Trumvirate. Uses a green deck.
 * One of the main antagonists and an invader from another dimension that Miroku calls using the Reverse Galaxy Documents. Rukinos' soul possesses a crab doll, and he consumes crab excessively. He destroys the gate to the third class and defeats both Kiriga and Eris, however with the two of them getting revenge later with their newfound Tri-Dragon Deity Ultimates. He participates in the Justice Cup, but loses to Magical. He is used by Miroku to summon Nakes, before being saved by the Trumvirate. Uses a green deck.


 * Denebola the Leo (獅子座のデネボラ)
 * Key Cards: The LeoAstralArmored LeoBrave, The CarrierEmperor Ridefencer
 * One of the main antagonists and an invader from another dimension that Miroku calls using the Reverse Galaxy Documents. An acting fanatic, she is egotistical and frequently compares life to a show, of which she is the star. Looking to battle Rei, Denebola goes to the Number One Star Ship and wins against Salt protecting a sick Rikuto, thus taking the Space Compass. She shows up at the Justice Cup, using a fake Compass to bait Rei into a battle. Kiriga eventually regains it after another battle, in which Denebola dramatically confesses her love for him. She is used by Miroku to summon Nakes before being saved by the Trumvirate. Uses a white deck with Ultra Immunity: Blue.
 * One of the main antagonists and an invader from another dimension that Miroku calls using the Reverse Galaxy Documents. An acting fanatic, she is egotistical and frequently compares life to a show, of which she is the star. Looking to battle Rei, Denebola goes to the Number One Star Ship and wins against Salt protecting a sick Rikuto, thus taking the Space Compass. She shows up at the Justice Cup, using a fake Compass to bait Rei into a battle. Kiriga eventually regains it after another battle, in which Denebola dramatically confesses her love for him. She is used by Miroku to summon Nakes before being saved by the Trumvirate. Uses a white deck with Ultra Immunity: Blue.


 * Nakes the Ophiuchus and Reincarnation of Evil World (邪界転生のネイクス)
 * Key Cards: The SnakeEmperorAstralArmored BravePiooze, Gothic-Grave
 * An invader from another dimension that Miroku calls by sacrificing Rukinos and Denebola. The embodiment of the 13th zodiac Ophiuchus, sealed away on a distant planet. Nakes gave Miroku power in exchange for his revival, though swallows him after obtaining the Ultimate Battle Spirits. He wants to consume space itself to ease his loneliness, and Zero the Ultimate defeats him. He admits defeat and with Rukinos and Denebola returns to their own dimension.
 * An invader from another dimension that Miroku calls by sacrificing Rukinos and Denebola. The embodiment of the 13th zodiac Ophiuchus, sealed away on a distant planet. Nakes gave Miroku power in exchange for his revival, though swallows him after obtaining the Ultimate Battle Spirits. He wants to consume space itself to ease his loneliness, and Zero the Ultimate defeats him. He admits defeat and with Rukinos and Denebola returns to their own dimension.


 * Planet Greensmothie
 * Maripoza the Earth (大地のマリポーザ)
 * Key Cards: The LightFangPhoenix Rekkuumaru
 * Leader of Planet Greensmoothie's forest people. Maripoza worships the God of Darkness Bomber, and kidnaps Laila as a sacrifice to him. Her faith was shaken after Rei obtained Ultimate-Kingtaurus, as she became certain that he was the true god. Uses a green deck.
 * Leader of Planet Greensmoothie's forest people. Maripoza worships the God of Darkness Bomber, and kidnaps Laila as a sacrifice to him. Her faith was shaken after Rei obtained Ultimate-Kingtaurus, as she became certain that he was the true god. Uses a green deck.


 * God of Darkness Bomber (暗黒神ボンバー)
 * Key Cards: The BlueSkyHero Kung-Wolf
 * A being worshipped as a god on Planet Greensmoothie. He speaks in grunts. Bomber falls in love with Eris at first sight, and battles for her hand in marriage. However, he loses, and leaves the planet. Uses a green deck.
 * A being worshipped as a god on Planet Greensmoothie. He speaks in grunts. Bomber falls in love with Eris at first sight, and battles for her hand in marriage. However, he loses, and leaves the planet. Uses a green deck.


 * Banaana (バナーナ)
 * A small bird that acts as Bomber's interpreter.
 * A small bird that acts as Bomber's interpreter.


 * Mob Bomber (モブボンバー)
 * Followers of Maripoza, dressed in outfits similar to Bomber.
 * Followers of Maripoza, dressed in outfits similar to Bomber.


 * Planet ASAKUSA
 * Kaneari (カネアリ)
 * A rich man who employs Rei's services to protect Magical's first ribbon. However, it is discovered that he is a thief and that he stole the ribbon. Kaneari is arrested by ASAKUSA police.
 * A rich man who employs Rei's services to protect Magical's first ribbon. However, it is discovered that he is a thief and that he stole the ribbon. Kaneari is arrested by ASAKUSA police.


 * Sargasso Space
 * Pirate Ship COWCOW
 * A ship that Salt formerly worked on as cook. Searching for treasure, the crew sailed into the Sargasso ship graveyard. There, they found Ultimate-Beelzebeat's crystal, but were cursed and turned into ghosts; the crew does no realize this until the Number One Star Ship comes their way, however. After Rei lays claim to Ultimate-Beelzebeat, they return to normal. They are cameos of the Japanese comedian group Cowcow. The captain Yoshi (ヨシ) is voiced by Yoshi Yamada, and the crewmate Tada (タダ) is voiced by Kenji Tada.


 * Sargasso Devil (サルガッソー魔神)
 * The being that caused Sargasso Space to form. Originally, Sargasso Devil was a dish-washing robot that worked for a poor professor. After accidentally dropping the professor's engagement ring down the drain, he fell to despair and started to suck up everything around him. Mugen helps him make the ring resurface with hot water after Sargasso Devil loses to Rei.
 * The being that caused Sargasso Space to form. Originally, Sargasso Devil was a dish-washing robot that worked for a poor professor. After accidentally dropping the professor's engagement ring down the drain, he fell to despair and started to suck up everything around him. Mugen helps him make the ring resurface with hot water after Sargasso Devil loses to Rei.


 * Planet Bluestone
 * The Guardian Bertram (守護神バートラム)
 * The guardian of the shrine that houses a fan said to cure any illness. He tests those who want to obtain it with a Battle Spirits quiz, turning those who fail to answer correctly into stone.
 * The guardian of the shrine that houses a fan said to cure any illness. He tests those who want to obtain it with a Battle Spirits quiz, turning those who fail to answer correctly into stone.


 * Kon Tone (コン・トーン)
 * The guardian of the Shrine of Chaos which houses Ultimate-Alexander. Appears as a ball of light.
 * The guardian of the Shrine of Chaos which houses Ultimate-Alexander. Appears as a ball of light.


 * Mirror Zero (鏡のゼロ)
 * Mirror images of Zero that Rei faces off simultaneously as a trial to obtain Ultimate-Alexander.
 * Mirror images of Zero that Rei faces off simultaneously as a trial to obtain Ultimate-Alexander.


 * Dongoros of the Quintessential Enka (ド演歌のドンゴロス)
 * An enka singer who is more concerned with being popular and making money than putting his heart into song. He abuses the Galactic Law of Battle Spirits to make people buy his CDs when they lose. He tries to obtain Ultimate-Rean so that he can become stronger and force people to buy more.
 * An enka singer who is more concerned with being popular and making money than putting his heart into song. He abuses the Galactic Law of Battle Spirits to make people buy his CDs when they lose. He tries to obtain Ultimate-Rean so that he can become stronger and force people to buy more.


 * Ultimate-Siegfrieden (アルティメット・ジークフリーデン)
 * Found on Planet Ice Cube by Rei. Acknowledges Rei for aiming for number one.
 * Found on Planet Ice Cube by Rei. Acknowledges Rei for aiming for number one.


 * Ultimate-Kingtaurus (アルティメット・キングタウロス)
 * Found on Planet Greensmoothie by Rei. Has a very belligerent and impatient personality.
 * Found on Planet Greensmoothie by Rei. Has a very belligerent and impatient personality.


 * Ultimate-Grand-Woden (アルティメット・グラン・ウォーデン)
 * Found in Sargasso Space by Kiriga. Rejects everyone who tries to obtain him, though acknowledges Kiriga for being persistent.
 * Found in Sargasso Space by Kiriga. Rejects everyone who tries to obtain him, though acknowledges Kiriga for being persistent.


 * Ultimate-Beelzebeat (アルティメット・ベルゼビート)
 * Found in Sargasso Space by Rei. Turns the crew of the COWCOW into ghosts, but acknowledges Rei after he beats both Yoshi and Tada.
 * Found in Sargasso Space by Rei. Turns the crew of the COWCOW into ghosts, but acknowledges Rei after he beats both Yoshi and Tada.


 * Ultimate-Alexander (アルティメット・アレクサンダー)
 * Found on Planet Bluestone's Shrine of Chaos by Rei. He was left there by his former master for reasons unknown, and as such refuses to accept Rei as his new master. Rei convinces Ultimate-Alexander to come with him and seek out his master. On Planet Kachidonia, he meets his former master, revealed to be Kiriga. However, Kiriga has no memory of him, and Ultimate-Alexander acknowledges Rei as his new master. Later he is traded back to Kiriga in exchange for Ultimate-Odin.
 * Found on Planet Bluestone's Shrine of Chaos by Rei. He was left there by his former master for reasons unknown, and as such refuses to accept Rei as his new master. Rei convinces Ultimate-Alexander to come with him and seek out his master. On Planet Kachidonia, he meets his former master, revealed to be Kiriga. However, Kiriga has no memory of him, and Ultimate-Alexander acknowledges Rei as his new master. Later he is traded back to Kiriga in exchange for Ultimate-Odin.


 * Ultimate-Rean (アルティメット・リーン)
 * Found on an unexplored planet by Rei. Shows illusions to people trying to find him, and acknowledges Rei for not running away.
 * Found on an unexplored planet by Rei. Shows illusions to people trying to find him, and acknowledges Rei for not running away.


 * Ultimate-Siegwurm-Nova (アルティメット・ジークヴルム・ノヴァ)
 * One of the Tri-Dragon Deities that protects the Ultimate Battle Spirits. Fought against the dimensional invaders in the past and comes into Rei's possession with their second coming.
 * One of the Tri-Dragon Deities that protects the Ultimate Battle Spirits. Fought against the dimensional invaders in the past and comes into Rei's possession with their second coming.


 * Ultimate-Sagitto-Apollodragon (アルティメット・サジット・アポロドラゴン)
 * One of the Tri-Dragon Deities, found by Kiriga in the Six Color Nebula. He is initially dubious as to whether Kiriga will be sufficiently powerful enough without his memories, but comes into his possession anyway.
 * One of the Tri-Dragon Deities, found by Kiriga in the Six Color Nebula. He is initially dubious as to whether Kiriga will be sufficiently powerful enough without his memories, but comes into his possession anyway.


 * The HolyDragonEmperor Ultimate-Savior (聖龍皇アルティメット・セイバー)
 * One of the Tri-Dragon Deities, found by Eris in a newly-formed nebula. Acknowledges Eris for her devotion to space and sense of justice, and grants her an Ultimate symbol.
 * One of the Tri-Dragon Deities, found by Eris in a newly-formed nebula. Acknowledges Eris for her devotion to space and sense of justice, and grants her an Ultimate symbol.


 * Magical Star Saki (マジカルスター咲)
 * Key Cards: The WhiteSnakeEmperor Aldius-Viper
 * The number one idol in space. Her call and response phrases are "Everyone, are we friends??", followed by "Yes! Magical!". On Planet ASAKUSA, Magical is kidnapped by the Triumvirate so that she can rest. However, Mugen challenges them, not knowing their good intentions, and returns her stolen first ribbon. In the Third Class, she hosts an expedition with the crew of the Number One Star Ship on the planet where Ultimate-Rean is lying. Magical becomes enamored of Zero the Glint after seeing his first battle. She also appears at the Justice Cup as both an announcer and a participant.
 * The number one idol in space. Her call and response phrases are "Everyone, are we friends??", followed by "Yes! Magical!". On Planet ASAKUSA, Magical is kidnapped by the Triumvirate so that she can rest. However, Mugen challenges them, not knowing their good intentions, and returns her stolen first ribbon. In the Third Class, she hosts an expedition with the crew of the Number One Star Ship on the planet where Ultimate-Rean is lying. Magical becomes enamored of Zero the Glint after seeing his first battle. She also appears at the Justice Cup as both an announcer and a participant.


 * Justice Tachibana (ジャスティス立花)
 * A galactic charisma and host of the Justice Cup. His call and response phrases are "This is my~", followed by "Justice!!".
 * A galactic charisma and host of the Justice Cup. His call and response phrases are "This is my~", followed by "Justice!!".


 * Galaxy Watanabe (ギャラクシー渡辺)
 * Guardian of the Ultimate Shrine Void, where the Ultimate Battle Spirits is housed. He is swallowed by Nakes, though is seen alive at the end.
 * Guardian of the Ultimate Shrine Void, where the Ultimate Battle Spirits is housed. He is swallowed by Nakes, though is seen alive at the end.


 * Tohno (トーノ)
 * Key Cards: The MachineLionDeity Strikewurm-Leo
 * A friend of Rei and prince of Planet Faucet. Tohno has a kappa-like head, and his emotions go berserk when it is broken. The Seven Galaxy Generals challenge him for one of the handles that controls the water flow, and he loses. He goes to planet Ice Cube to get an Ultimate to take back the handle, where he meets Rei again. Tohno is also a fan of Magical Star Saki.
 * A friend of Rei and prince of Planet Faucet. Tohno has a kappa-like head, and his emotions go berserk when it is broken. The Seven Galaxy Generals challenge him for one of the handles that controls the water flow, and he loses. He goes to planet Ice Cube to get an Ultimate to take back the handle, where he meets Rei again. Tohno is also a fan of Magical Star Saki.


 * Riddle (リドル)
 * Key Cards: The DarkDragon Dark-Tyrannosaura
 * Battles Rei for a crystal in the first episode and loses. Later, he meets Rei again in a Second Class card station, now considering him a friend. Uses a red dark deck.
 * Battles Rei for a crystal in the first episode and loses. Later, he meets Rei again in a Second Class card station, now considering him a friend. Uses a red dark deck.


 * David April (デイビッド・エイプリル)
 * Laila and Rikuto's grandfather who made the space compass. He was a card quester who searched for the Ultimate Battle Spirits, but never found it. David was rivals with Eris' father.
 * Laila and Rikuto's grandfather who made the space compass. He was a card quester who searched for the Ultimate Battle Spirits, but never found it. David was rivals with Eris' father.


 * Dulfer (ダルファ)
 * Key Cards: The ArcAngelia Raraphael
 * Fairy's deceased father and Kiriga's friend. He is a fan of Magical and uses an Angelia-based deck. A hologram of him guards the Treasure Ship as well as Kiriga's memories.
 * Fairy's deceased father and Kiriga's friend. He is a fan of Magical and uses an Angelia-based deck. A hologram of him guards the Treasure Ship as well as Kiriga's memories.

Anime
Battle Spirits: Saikyo Ginga Ultimate Zero aired on TV Asahi beginning September 22, 2013 and ending September 20, 2014. It replaced Battle Spirits: Sword Eyes in the 7:00 NichiAsa timeslot.

Music

 * Opening themes
 * "I Wish"
 * Lyrics/Composition: Ogawa Yuya
 * Arrangement/Performance: BACKDRAFT SMITHS
 * Episodes: 1-25, 49 (ending theme)
 * "ZERO"
 * Lyrics: Kotoko
 * Composition: Noriyuki Asakura
 * Arrangement: Yasutaka Kume
 * Performance: Tatsuyuki Kobayashi
 * Episodes: 26-49


 * Ending themes
 * "Nostalgia"
 * Lyrics: Niho Karasawa
 * Composition/Arrangement: Yusuke Katō
 * Performance: Kato*Fuku (Emiri Katō & Kaori Fukuhara)
 * Episodes: 1-26
 * "Playful Sun" (徒太陽)
 * Lyrics: ACKO
 * Composition/Arrangement: Rui Nagai
 * Performance: i☆Ris
 * Episodes: 26-37
 * Endless NOVA
 * Lyrics: Aki Hata
 * Composition/Arrangement: Seima Iwahashi
 * Performance: AG7 (Shuhei Kita, Himeka, Sayaka Sasaki, Marina Kawano, Konomi Suzuki, Natsumi Okamoto, Tatsuyuki Kobayashi)
 * Episodes: 38-48

Manga
A manga version by Masato Ichishiki was serialized in Saikyo Jump magazine beginning in October 2013. The chapter titles are written entirely in English words. Each chapter is referred to as a "Turn."