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Season guide

Choudenshi Bioman: Season 1

51 episodes Premiered Feb 4, 1984 Updated Jul 25, 2026
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Episodes

S1·E1

Enigma Of The Giant Robot's Appearance

Feb 4, 1984 · 20 min

An assault on a peaceful city of technology by the evil Doctor Man and the Neo Empire Gear awakens an ancient robot, who chooses five humans to awaken into becoming Bioman to face

S1·E2

Gathering! Warriors Of Destiny

Feb 11, 1984 · 20 min

Doctor Man sends Fara and Psygorn to pursue Mika Koizumi about Bioman, even though she had quit the team while the other members try to win her back onto their side.

S1·E3

Our Friend, Bio Robot

Feb 18, 1984 · 20 min

When Bio Robo becomes unexpectedly damaged during a battle with a Mecha-Gigan, Shirou tries to get a part needed for repair only to have the powerful Monster standing in his way.

S1·E4

Self Destruct! Mecha Humans

Feb 25, 1984 · 20 min

Using Shirou's animal informants, Bioman discovers a Gear plot to replace humans with exploding Mecha Humans to sabotage a super-energy plant.

S1·E5

Kill the Unseen Enemy

Mar 3, 1984 · 20 min

In order to discourage people from indulging in a rain of coins created by an invisible Mecha Gigan controlled by Monster, Shingo decides to become a bad criminal to get the means

S1·E6

Rise Up! Bio Robo

Mar 10, 1984 · 20 min

Mika's pursuit of a lead when a Mecha Gigant crash lands near a mountain leads her into a confrontation with Fara over a plot connected with a trap by Gear to stop Bio Robo.

S1·E7

Captured Peebo

Mar 17, 1984 · 20 min

When Peebo discovers a letter from a friend from Bio, it inspires Doctor Man to start a plot involving making the robot believe that his friend has returned after 500 years.

S1·E8

Fight! Vow to the Planet

Mar 24, 1984 · 20 min

As Peebo is forced to give up Bioman's secrets to Gear, the team rescues him as they decide to discover the harsh truth about Joy's ultimate fate.

S1·E9

The Jumprope That Erases People

Mar 31, 1984 · 20 min

Ryuuta becomes trapped within the dimension of a supercomputer by twin girl Mecha Humans being used to capture children for Gear.

S1·E10

Farewell, Yellow

Apr 7, 1984 · 20 min

Doctor Man develops a gun devised of Anti-Bio Particles to destroy the Bio Particles within the Bioman, forcing Mika to make a move that may ultimately prove to be fatal!

S1·E11

Enter, New Warrior Jun

Apr 14, 1984 · 20 min

After the passing of their teammate, Bioman search for a new Yellow4, all while they're pursued by a mischievous archer who doesn't realize what she's getting into.

S1·E12

Murderer Green!

Apr 21, 1984 · 20 min

Shingo begins to doubt himself when he believes that a Mecha-Human was actually the father of a boy he was trying to save.

S1·E13

I'm Jun!

Apr 28, 1984 · 20 min

Jun tries to figure a way to defeat Gear's newest upgrade on her own while the captain of the Olympic archery tracks her down to find out what happened to her.

S1·E14

Neo Intellect Brain!

May 5, 1984 · 20 min

When Doctor Man abandons a new Mecha Gigan-controlling super-computer that develops emotions, Hikaru tries to win it over with the concepts of love and empathy.

S1·E15

The Female Warrior's Flaming Oath

May 12, 1984 · 20 min

After being accused by Jun of not doing enough to stop a fungus being distributed by Gear, Hikaru puts it upon herself to find the means to stop their infection plans.

S1·E16

Run, 21599 Seconds

May 19, 1984 · 20 min

Jun must reach a device that will cause a massive volcanic explosion in 6 hours time, but is distracted by Fara in preventing her from reaching that goal quickly.

S1·E17

I Saw Ryugu Castle

May 26, 1984 · 20 min

Doctor Man orders the abduction of a boy related to Urashima Taro, in hopes of using his ancestor's memory to find the treasures of the undersea utopia.

S1·E18

Super Powered Girl's Prayer

Jun 2, 1984 · 20 min

Shingo encounters a girl who has strange visions of a Mecha Gigan attacking her town associated with a stone that gives her amazing gifts.

S1·E19

My Father Is Doctor Man

Jun 9, 1984 · 20 min

Doctor Man adds his 17-year old son to Gear as its new commander, with a cruelty that Ryuuta believes can be stopped.

S1·E20

The Prince's Challenge!

Jun 16, 1984 · 20 min

As the Bioman try to figure out how to deal with Prince and his Grotes Canth, Ryuuta tries to discover how to relate his own experiences in hopes of dealing with Doctor Man's son.

S1·E21

Protect The Bio Base

Jun 23, 1984 · 20 min

A Mecha-Human photographer set up by Monster takes control of an investigating Hikaru, forcing Jun to pick up where she left off in order to save her and discover the plan.

S1·E22

A Great Burglar!? Blue!

Jun 30, 1984 · 20 min

When Ryuuta gets involved in returning a gold statue to its original owner, it becomes complicated when Fara sends out a Ryuuta Mecha-human to steal gold for Gear.

S1·E23

Gyo! Attack Of The Puppets!

Jul 7, 1984 · 20 min

Bioman must protect a runaway girl who ends up with a gemstone required by Gear to perfect their new super-weapon for causing global chaos.

S1·E24

The Exploding Flower of Love

Jul 14, 1984 · 20 min

Shingo tries to protect the flowers of two children after Fara and a Mecha Gigan transform a field they cultivated for sale into bombs set to explode.

S1·E25

Prince's Ghost?

Jul 21, 1984 · 20 min

Shuichi Kageyama, a boy looking for his family, is attacked by Gear's forces as Doctor Man tries to confirm that he is actually his true long-lost son!

S1·E26

My Father's Dreadful Secret

Jul 28, 1984 · 20 min

As Doctor Man continues to pursue his son to join him, Shuichi receives a mysterious contact from his mother that leads to the revelation to him and Bioman of the truth regarding G

S1·E27

The Female Warriors Of Spider Hell

Aug 4, 1984 · 20 min

Hikaru and Jun become trapped in a seaside town conquered by an army of mechanical spiders that control the populace.

S1·E28

The Assassination of Doctor Man

Aug 11, 1984 · 20 min

Realizing the trouble of Gear being ruled by a human, the Big Three decide to assassinate Doctor Man, leading to a loyal Mechaclone to try and reach a weapon in hopes of dealing wi

S1·E29

The Day Tokyo Disappeared!?

Aug 18, 1984 · 20 min

Trying to find a boy's lost brother, Ryuta discovers a Gear plot to suck Tokyo into multiple simultaneous black-hole bombs!

S1·E30

Ultimate Kans' Demon Sword

Aug 25, 1984 · 20 min

Shirou becomes the fake fiancée of a swordmaker's daughter in order to prevent Monster from obtaining a sword for Doctor Man's final Mecha Gigan.

S1·E31

New Model? Arrival Of Megas

Sep 1, 1984 · 20 min

The Bioman face the Beastnoids in a showdown as a comet that interferes with their powers passes Earth, all while Doctor Man decides to unveil his new secret weapon.

S1·E32

Gear's Great Tactics Reformation

Sep 8, 1984 · 20 min

As Bioman works on a new finisher for Bio Robo, Jun tries to help out a girl whose foot is run over by a car controlled by an upgraded Psygorn.