Blue Gender

Blue Gender

ブルージェンダー
1999 -2000 AIC ASTA TV Tokyo 26 episodes Completed
Action Mecha Horror Sci-Fi Drama
Details & Synopsis
Yuji Kaido wakes up from cryogenic sleep to find the world he knew is gone. While he was under, Earth was overrun by the Blue, massive insectoid creatures that appeared without warning and dismantled human civilization in a generation. What remains of humanity has retreated to a space station called Second Earth, sending small recovery teams back down to the surface. Yuji is one of their targets. Marlene Angel is the soldier sent to retrieve him.

Produced by AIC ASTA and directed by Masashi Abe, Blue Gender aired on TV Tokyo in 1999 and ran for 26 episodes. It is a survival horror mecha series that earns its darkness, the Blue are genuinely terrifying, the losses are real, and Yuji's psychological deterioration across the series is handled with a seriousness the genre rarely manages. This is not a show about a chosen hero learning to fight. It is a show about what war does to a person who was never supposed to be in one.

The nudity and violence are not incidental. They are part of a deliberate refusal to make any of this comfortable. Blue Gender wants you to feel the weight of a world that has already lost.

A theatrical film, Blue Gender: The Warrior, recaps and recuts the series. Skip it. Watch the series. The ending will stun you.
Alt Title ブルージェンダー
Studio AIC ASTA
Network TV Tokyo
Aired 1999 - 2000
Episodes 26
Genre Action, Mecha, Horror, Sci-Fi, Drama
Status Completed
Search Go to ep Filters
Arc List (3)
Sleeper Recovery Arc (12) Second Earth Arc (9) Final Reckoning Arc (5)
Sleeper Recovery Arc 12 eps 12 canon 📷 12
001 One Day Aired Oct 8, 1999 canon 📷 300 ►
It is 2031. Yuji Kaido wakes up from cryogenic sleep expecting doctors and a cure. What he gets instead is a ruined world overrun by insectoid creatures called the Blue and a soldier named Marlene Angel who treats him like cargo. Six members of the recovery team are introduced in this episode. Four of them are dead before the next one ends. Blue Gender establishes its rules immediately: nobody is safe, the world is already lost, and survival is not a given. Yuji has no idea what he is about to become.
Lore Debut: Second Earth Recovery Unit vs. BLUE Swarm (Medical Facility Awakening)
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002 Cry Aired Oct 15, 1999 canon 📷 300 ►
Yuji learns the truth. The Blue have conquered Earth. The surviving human population fled to Second Earth, a space station in orbit. Marlene's team has one mission: get the Sleeper to the shuttle alive. The orders do not include explaining to him why he matters or what happens to the humans left behind. Yuji asks both questions. The answers are worse than he expected.
Lore Second Earth Recovery Unit vs. BLUE Swarm (Medical Facility Awakening)
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003 Trial Aired Oct 22, 1999 canon 📷 300 ►
Yuji refuses to be cargo. He demands training - weapons, Armor Shrike basics, anything that lets him participate in his own survival. Marlene gives him the crash course. Joey teaches him the mech. The show commits immediately to the idea that Yuji's arc is about transformation: the person who wakes up terrified and helpless in episode one is not the person this story ends with. The trial begins here.
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004 Agony Aired Oct 29, 1999 canon 📷 300 ►
The team arrives in Seoul. Yuji disobeys Marlene and saves a little girl named Yung from a Blue attack. He discovers a colony of survivors - humans who were left behind when Second Earth evacuated, officially classified as dead. Standing orders are to leave them. Yuji makes Yung a promise he cannot keep without violating the mission. The show establishes its central moral problem in this episode: what do you owe to the people you cannot save?
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005 Priority Aired Nov 5, 1999 canon 📷 300 ►
The surviving team members must enter an abandoned communications tower that the Blue have converted into a nest. The only way to contact Second Earth. The only way out. Yuji's promise to Yung is tested against the mission's brutal calculus. The show does not let him have both. The episode ends with a cost. Blue Gender's secondary characters are not protected by narrative convention and this episode makes sure you understand that.
Lore Debut: Yuji & Marlene vs. Underground Worm BLUE (Tunnel Ambush)
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006 Relation Aired Nov 12, 1999 canon 📷 300 ►
Marlene and Yuji travel on foot toward Baikonur Cosmodrome. The distance between them - emotional, not physical - begins to close. Yuji's grief over everything he has already lost forces Marlene's own memories to surface. She has been a soldier since she was ten years old. She has not been anything else. Yuji is the first person to make her question whether being a soldier is the same as being alive. The relationship arc begins here in earnest.
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007 Sympathy Aired Nov 19, 1999 canon 📷 300 ►
They meet Dice Quaid - a rough-edged survivor who operates outside of both Second Earth's authority and the Blue's attention, somehow. He is alive because he is pragmatic and because he has stopped caring about the larger picture. The show introduces him as a contrast to both Yuji's emotional volatility and Marlene's mission rigidity. Dice is what adaptation looks like when you strip out hope. The episode is warmer than most of what surrounds it and the warmth is the point.
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008 Oasis Aired Nov 26, 1999 canon 📷 300 ►
A sandstorm separates Yuji from the others. He is taken in by a band of nomads living in the desert - Elena and her people, who have built a small life outside the war's reach. For a few episodes, Yuji believes this is possible. A life that is not about the Blue. Not about Second Earth. Just people and a desert and something that resembles peace. The show lets him believe it just long enough.
Lore Debut: Yuji Kaido (Armored Shrike) vs. Double-Headed BLUE Carrier
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009 Confirm Aired Dec 3, 1999 canon 📷 300 ►
Marlene and Dice find Yuji. Marlene wants to continue the mission. Yuji wants to stay. Then the bandits attack Elena's camp and Yuji is forced to choose: the life he was imagining or the people he came with. He chooses his companions. It is the right choice. It is the end of the version of himself that could have chosen the other thing. The show does not treat this as a moment of heroism. It treats it as a loss.
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010 Tactics Aired Dec 10, 1999 canon 📷 300 ►
Baikonur Cosmodrome - the space base that is their only route off the planet - is in chaos. Blue have infiltrated the facility and the automated defense systems have turned on the human personnel. The mission is nearly over before it begins. The episode is the series at its most operationally intense: a race to regain control of a base that is killing the people it was designed to protect, against a deadline measured in dwindling ammunition.
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011 Go Mad Aired Dec 17, 1999 canon 📷 300 ►
A renegade officer attempts to hijack the shuttle and escape alone. The attempt fails but at the cost of diverting resources from the battle outside, where Marlene and her remaining pilots are fighting for their lives. The episode is about the shape that desperation takes - the renegade is not a villain, he is a man who has done the math and decided the mission is not worth dying for. The show disagrees with him and makes him wrong in ways he did not anticipate.
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012 Progress Aired Dec 24, 1999 canon 📷 300 ►
The shuttle launches. They are leaving Earth. During the flight, a mutated Blue that had hidden aboard attacks Yuji and critically injures him. Marlene gets him to Second Earth alive. They are separated immediately upon arrival - Marlene demoted and sent back to training, Yuji taken to a medical lab whose purpose he does not know yet. The first arc ends here. Yuji survived the surface. What happens next is different and in some ways worse.
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Second Earth Arc 9 eps 9 canon 📷 9
013 Heresy Aired Jan 14, 2000 canon 📷 300 ►
Second Earth is not the sanctuary it promised to be. Marlene, demoted and separated from Yuji, rebels against her reassignment and tries to find him. Alicia Whistle - another Sleeper, young and naive, immediately drawn to Yuji - is introduced. The High Council's true interest in the Sleepers begins to become clear. The show's second arc reveals that the institutional structure that was supposed to save humanity is as broken as the world it fled.
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014 Set Aired Jan 21, 2000 canon 📷 300 ►
Marlene tries to free Yuji from the laboratory where he is being held and fails. She must stand before the High Council to account for her actions - with Yuji beside her, equally unaware of why he is important. The episode establishes Second Earth's bureaucratic cruelty: an institution that subjects its own soldiers to psychological conditioning and treats dissent as a medical problem. The dystopia is not the Blue. The dystopia is what humans built in orbit to escape them.
Lore Debut: Yuji Kaido & Sleeper Corps vs. Baikalsk BLUE Nest
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015 Calm Aired Jan 28, 2000 canon 📷 300 ►
A quiet episode in the middle of a war. Yuji and Marlene find each other on Second Earth and in the brief stillness between missions, they find each other in a different sense. The intimacy between them is handled without comedy or coyness - the show treats it as two people in impossible circumstances being human with each other for the first time. The Adult Swim version cut most of this. The original does not apologize for any of it. This is the episode that justifies the relationship.
Lore Yuji Kaido & Sleeper Corps vs. Baikalsk BLUE Nest
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016 A Sign Aired Feb 4, 2000 canon 📷 300 ►
The Sleeper Brigade launches its first major offensive against the Blue on Earth. Yuji witnesses Tony Frost in combat for the first time - a fellow Sleeper who operates at a level of controlled violence that makes Yuji look like a civilian. Tony destroys an entire Blue nest alone. He feels nothing about it. Yuji is awed. He should be frightened. The sign of what Tony is becoming is visible if you know what to look for.
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017 Eclosion Aired Feb 11, 2000 canon 📷 300 ►
Eclosion - the emergence of an insect from its cocoon. The title is doing double work. Marlene notices that Yuji's behavior is changing: on the battlefield he is becoming something extraordinary, his B-cells amplifying his combat instincts beyond normal human parameters. Off it, he is increasingly distant, obsessive, less present. The show begins documenting his deterioration with the same clinical attention it gives to the Blue's biology. He is hatching into something.
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018 Chaos Aired Feb 18, 2000 canon 📷 300 ►
Miyagi - the director of Second Earth's science division - reveals the truth to Marlene. The B-cells are not a disease. They are an evolutionary response. The Blue are not alien invaders. They are Earth's immune system, triggered by human overpopulation and environmental collapse. The Sleepers carry the same B-cells as the Blue. Yuji is not a weapon against the Blue. He is potentially continuous with them. The show's philosophical thesis lands here and it does not soften it.
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019 Collapse Aired Feb 25, 2000 canon 📷 300 ►
Another offensive. Yuji's B-cells are accelerating. On the battlefield he is now the most effective fighter in the brigade - and the most frightening. His lust for killing Blue has crossed the line from necessity into something compulsive and joyless. Marlene watches it happening. She cannot stop it from the outside. The only person who reached him before was Marlene herself, and he is no longer the person who let her in.
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020 Versus Aired Mar 3, 2000 canon 📷 300 ►
Marlene is separated from Yuji as the second offensive fractures. Tony's agenda is becoming harder to ignore. A Second Earth power struggle between Miyagi's Ark faction and the High Council erupts into open conflict. The episode pulls multiple threads simultaneously and the effect is of a world moving faster than anyone can manage - the Blue, the politics, Yuji's deterioration, Tony's plan all converging toward the same point.
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021 Joker Aired Mar 10, 2000 canon 📷 300 ►
Tony's B-cells have fully activated. He does not see it as deterioration. He sees it as revelation. He is the messiah. The Blue are righteous. Humanity - the technological, orbital, station-dwelling humanity - must be cleansed from the Earth so that a purer form can emerge. He is wrong in ways that are genuinely coherent given what the show has established about the Blue and their origin. The Joker has revealed his hand. What he is about to do with it is the finale.
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Final Reckoning Arc 5 eps 5 canon 📷 5
022 Dogma Aired Mar 17, 2000 canon 📷 300 ►
Yuji and Marlene infiltrate the Blue-infested Medical Station to find Tony. They are reunited with Rick along the way. The station is a nightmare - Tony's Blue allies throughout, civilians in hibernation pods, the clock running on whatever Tony is building toward. The episode is the show's most pure action sequence and it earns its place in the final stretch because everything at stake has been established across twenty-one episodes. The dogma Tony operates under is about to collide with Yuji's.
Lore Debut: Yuji Kaido vs. Tony Frost (Second Earth Station Riot)
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023 Soliste Aired Mar 17, 2000 canon 📷 300 ►
Rick is injured too severely to continue. Yuji and Marlene proceed alone to the Medical Station's main computer room where Tony is waiting. Yuji must confront someone who was his rival, his benchmark, the measure of what a Sleeper could become - and kill him. The solo quality of the episode is deliberate: this confrontation belongs to Yuji and the show gives it to him without witnesses. Tony's final scene is the series' most honest moment about what the B-cells are and what they cost.
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024 Compass Aired Mar 24, 2000 canon 📷 300 ►
Tony is dead. The survivors of Second Earth begin to rebuild. Miyagi announces his plan: Second Earth as humanity's permanent home, the Earth below abandoned. Yuji cannot accept this. He came from that planet. He fought across it. He knows what it contains that no satellite image can show. The episode is a character study of a man who has survived everything the show put him through and still does not know what he survived it for. The compass is spinning.
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025 Adagio Aired Mar 24, 2000 canon 📷 300 ►
Satellite images detect a massive Blue migration pattern in South America, converging on a single point. Yuji understands this means something. He volunteers to lead an expedition down to Earth - Marlene with him, a team of volunteers, heading toward the largest Blue concentration on the planet. The adagio is the slow movement before the finale. The show is letting its breath out before the last note.
Lore Debut: Yuji & Marlene vs. Second Earth High Command / Earth Core
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026 Let Me Aired Mar 31, 2000 canon 📷 300 ►
The team finds the source: a massive crystalline formation in a cavern deep beneath a Blue nest. Yuji kills the creature guarding it and sends Marlene - pregnant with their child, though neither has said it aloud - to the surface to wait. He enters the crystal and sees through the Earth's eyes. He understands what the Blue were for and what humanity must become to exist alongside them. Above, Second Earth's population panics and destroys itself returning to the surface. Around the world, energy rises from former Blue nests and forms a ring in the atmosphere. Yuji emerges. He and Marlene watch the sun set over a planet that is no longer at war. The show does not pretend this is simple or triumphant. It is just over. Welcome to your next journey.
Lore Yuji & Marlene vs. Second Earth High Command / Earth Core
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ⓘ Legend
canon Episode adapts events from the source manga.
mixed Adapts source material but adds anime-original scenes.
good-filler Anime-original episode generally well-received by fans.
filler Anime-original episode not based on the source manga.
📷 Number of user-uploaded screencaps available for this episode.
YK

Yuji Kaido

SPOILER!

Primary Protagonist / Sleeper

Yuji Kaido enters cryogenic sleep in 2009 after being diagnosed with an incurable illness and wakes twenty-two years later in a world almost completely overrun by the Blue. Everything familiar is gone, and the soldiers recovering him treat his body as something valuable long before anyone explains why. Yuji begins frightened, angry and completely unprepared for the violence around him. Joey teaches him to pilot an Armor Shrike, while Marlene becomes both his protector and the person he most often challenges about what survival has done to humanity. On Second Earth, Yuji learns that his illness is connected to the B-cells that make Sleepers important to the military program. His growing combat ability comes with increasingly dangerous psychological changes, forcing him to fight for more than simple survival.
+6 LORE
Yuji & Marlene vs. Underground Worm BLUE (Tunnel Ambush) Blue Gender Master Ledger Yuji Kaido (Armored Shrike) vs. Double-Headed BLUE Carrier Blue Gender Master Ledger Yuji Kaido & Sleeper Corps vs. Baikalsk BLUE Nest Blue Gender Master Ledger Yuji Kaido vs. Tony Frost (Second Earth Station Riot) Blue Gender Master Ledger Yuji & Marlene vs. Second Earth High Command / Earth Core Blue Gender Master Ledger Yuji Kaido & Marlene Angel Dynamics B-Cells & Sleepers
MA

Marlene Angel

SPOILER!

Primary Protagonist / Second Earth Soldier

Marlene Angel is one of the soldiers sent to Earth to recover the cryogenically frozen Sleepers. The Blue killed her parents when she was a child, and Second Earth turned that loss into a life built around training, obedience and the belief that sentiment gets people killed. She initially treats Yuji as a mission objective whose survival matters because command says it does. Traveling with him across the ruined Earth gradually changes that. Yuji's fear, anger and refusal to accept Second Earth's cold calculations force Marlene to confront emotions she has spent years suppressing. When Yuji later begins losing himself inside the Sleeper program, their roles reverse and Marlene becomes the person fighting to preserve the humanity in him. Their relationship ultimately becomes the emotional center of the series.
+3 LORE
Yuji Kaido & Marlene Angel Dynamics B-Cells & Sleepers Yuji & Marlene vs. Underground Worm BLUE (Tunnel Ambush) Blue Gender Master Ledger Yuji & Marlene vs. Second Earth High Command / Earth Core Blue Gender Master Ledger
DQ

Dice Quaid

Supporting / Military Deserter and Earth Survivor

Dice Quaid is a former Second Earth soldier who abandons the military and chooses to survive on the ruined planet instead. Yuji and Marlene encounter him in the Mongolian wilderness, where his rough humor and open contempt for military thinking immediately clash with Marlene's training. Dice knows how to live outside the protected systems of Second Earth, and he has settled into the dangerous freedom of a world most people have already written off. He helps Yuji and Marlene continue toward the Baikonur space base and becomes one of the first people to show Yuji that surviving on Earth does not have to mean becoming emotionally numb. Beneath the boasting and arguments, Dice is practical, loyal and considerably more generous than he first appears.
LORE
TF

Tony Frost

SPOILER!

Major Antagonist / Sleeper Brigade Ace

Tony Frost is a Sleeper who awakens on Second Earth before Yuji and becomes the strongest pilot in the Sleeper Brigade. Calm, distant and extraordinarily effective against the Blue, Tony gives Yuji an immediate rival and a frightening example of what the military wants its Sleeper program to produce. His apparent lack of emotion hides something more dangerous than simple discipline. As his B-cells activate, Tony becomes convinced that the Sleepers represent the next stage of life and begins seeing himself in messianic terms. He rejects the idea that humanity deserves to reclaim Earth and draws Alicia into his vision of a final judgment against the remaining population. Tony's transformation makes the Sleeper program's greatest success one of Second Earth's most serious threats.
+2 LORE
Yuji Kaido vs. Tony Frost (Second Earth Station Riot) Blue Gender Master Ledger Tony Frost & The Sleeper Supremacists Sleeper Madness & Nomads
AW

Alicia Whistle

SPOILER!

Major Supporting / Sleeper Brigade Pilot

Alicia Whistle is another Sleeper awakened on Second Earth and assigned to the same combat program as Tony and Yuji. She is young, emotionally open and immediately attracted to Yuji, which puts her at odds with Marlene long before the larger danger surrounding the Sleeper program becomes clear. Alicia is not introduced as a hardened soldier. Her need for affection and belonging makes her especially vulnerable when the B-cells begin changing the Sleepers and Tony starts presenting himself as something more than human. She eventually follows Tony into his plan to turn against the remaining human population, even though her feelings for Yuji never disappear completely. Her fate is one of the clearest examples of Second Earth treating vulnerable people as weapons until it can no longer control what it created.
JH

Joey Heald

SPOILER!

Supporting / Recovery Squad Soldier and Yuji's Friend

Joey Heald is a young soldier in the recovery team that finds Yuji after his cryogenic sleep. Unlike Marlene's hard-edged professionalism, Joey approaches Yuji with patience and quickly becomes one of the first friendly faces in the future he has awakened into. He helps convince Marlene that Yuji can be useful in the field and teaches him how to operate an Armor Shrike, giving a frightened civilian the first practical skills he needs to survive against the Blue. Joey's kindness matters because it arrives before Yuji has learned to distrust almost everyone around him. His death during the dangerous journey toward Second Earth hits Yuji hard and reinforces how quickly ordinary friendship can be taken away in this world.
SM

Seno Miyagi

SPOILER!

Major Supporting / Second Earth Science Director

Seno Miyagi is a senior scientist on Second Earth and one of the first officials to question how the High Council is using the Sleepers. He recognizes that Marlene's presence stabilizes Yuji and argues that the two should remain together rather than treating Yuji as a laboratory asset separated from every human connection. His research into the Sleepers and their B-cells gradually exposes how dangerous the program has become. Seno's opposition to the High Council grows into the underground Ark movement, which eventually overthrows the existing leadership of Second Earth. Taking power does not give him an easy solution. His later decision to abandon Earth provokes a revolt among people who want to return, and he is ultimately killed by the population he briefly leads.
CV

Chairman Victor

SPOILER!

Antagonist / Chief Councilman of Second Earth

Chairman Victor is the dominant figure on Second Earth's High Council and one of the people responsible for turning the recovered Sleepers into a military program. He views the crisis on Earth through survival statistics, strategic advantage and the possibility that the Sleepers' B-cells can become a weapon against the Blue. Victor keeps critical information compartmentalized and has little patience for Seno Miyagi's objections to the way Yuji and the other Sleepers are being used. He is not dangerous because he enjoys cruelty. He is dangerous because he can justify almost any experiment or sacrifice as necessary for the species to survive. The conflict between Victor and Seno turns Second Earth's supposedly safe refuge into another battlefield over what humanity is willing to become.
AH

Amick Hendar

SPOILER!

Supporting / Education Station Chief

Amick Hendar is the chief of Second Earth's Education Station, responsible for the harsh conditioning used to turn survivors into soldiers capable of fighting the Blue. Marlene is one of the people shaped by that system, and Amick embodies the institutional belief that hesitation, attachment and softness are liabilities humanity can no longer afford. She is practical rather than theatrical about it, treating emotional suppression as part of military preparation. Later, when Seno Miyagi takes control and begins making decisions that threaten the station's remaining population, Amick does not simply transfer her loyalty to the new regime. She opposes his direction and tries to leave Second Earth, showing that her commitment has always been to survival as she understands it rather than to any particular leader.
RK

Rick Kilmer

Supporting / Military Elite and Sleeper Brigade Pilot

Rick Kilmer is one of Second Earth's elite soldiers assigned to fight alongside the Sleeper Brigade even though he is not a Sleeper himself. Cocky, capable and very aware of both qualities, Rick approaches combat with the confidence of someone who has survived long enough to believe he belongs among the best pilots on the station. He is especially interested in strong women and openly flirts with Marlene, creating a very different dynamic from the guarded relationship she has with Yuji. Rick matters because he gives the brigade a baseline for what an exceptional ordinary soldier can do beside people whose B-cells are pushing them beyond normal limits. He is competitive without sharing Tony's emerging belief that the Sleepers are a superior form of humanity.
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Fansub & Scanlation History

What AniDB Actually Documents

zx Landed the Same Month as the Edited Broadcast

Complete, August 2003 · 8.31 from 36 Votes
zx completed a full DVD-sourced release in August 2003, the same month Funimation's edited version began airing on Adult Swim. Rated 8.31 from 36 votes, the most-voted Blue Gender fan release on record, this was the uncut alternative to a broadcast that had to remove exactly the content that made the show what it was.
[zx]

ACX Has the Highest Rating on Record

ACX completed a DVD-sourced release in July 2007 rated 9.55 from 6 votes, the highest score any Blue Gender fan release has, though with far fewer votes than zx's wider-reaching release.
[ACX]

A Manga Almost Too Small to Matter

Takahashi Wrote It Himself, But It Was Only One Volume

Kadokawa's Comic Dragon, December 2000

Ryōsuke Takahashi, the anime's own creator, wrote a manga companion illustrated by Takashi Hashimoto, published in Kadokawa Shoten's Comic Dragon in December 2000. It ran to just a single volume, small enough that it likely never generated the kind of scanlation demand seen on this site's other pages. [UNCONFIRMED]: no scanlation group for this specific manga turned up in what was checked here.

A Dark Horse License for a Young Funimation

One of Funimation's First Non-Dragon Ball Licenses

AIC · TBS, October 1999 – March 2000

Blue Gender, created by Ryōsuke Takahashi (Armored Trooper Votoms, Gasaraki) and animated by AIC, ran on TBS for 26 episodes from October 1999 to March 2000. Funimation's license was notable at the time as one of the company's first releases outside the Dragon Ball franchise that had defined its early identity.

Too Graphic for Toonami, Rerouted to Adult Swim

Premiered August 4, 2003

Blue Gender was originally planned for Toonami, but its graphic violence, nudity, and sex scenes made that impossible without gutting the show. It was edited and rerouted to Cartoon Network's Adult Swim instead, premiering August 4, 2003 and running through mid-September, with reruns continuing into December.

A Compilation Movie With a Different Ending

Blue Gender: The Warrior, November 20, 2002

A compilation film, Blue Gender: The Warrior, released November 20, 2002, cuts roughly the final third of the TV series' plot and replaces it with an alternate ending, a real second version of the story similar in spirit to Wolf's Rain's split conclusion, though built by removing material rather than adding it.