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Series: Choudenshi Bioman
The Bioman team and their friend Peebo.

One! Two! Three! Four! Five! Choudenshi! Bioman!

Chōdenshi Bioman (Super Electronic Bioman) is the eighth Super Sentai and aired from 1984 to 1985.

500 years ago the Bio Robo traveled to Earth from the Bio Star and showered five people it discovered with Bio Particles. In the present day, Doctor Man tries to take over Earth with his mechanized followers, Neo Empire Gear. Now the robot Peebo must gather the people whose ancestors were infused with the Bio Particles to become Bioman and save the world.

The Biomen are:

The main units of Gear are:

  • Doctor Man/ aka Hideo Kageyama: The Mad Scientist Big Bad.
  • The Big Three: Gear's three generals
  • Beastnoids: The Quirky Miniboss Squad.
    • Beast King: Monster's loyal sidekick who, much like his master, is a Dumb Muscle.
    • Psygorn: A three-faced mentalist and frequent favorite of Mason.
    • Metzler: A Cyber Cyclops used for espionage, much like his frequent patron, Farrah.
    • Messerbeast: A Winged Humanoid and the first of the five to see combat, and one of the first to go.
    • Aquaiger: A fishman robot who bites it along with Messerbeast.
  • Mechaclones: The Mecha-Mooks

  • And on his own side:
    • Bio-Hunter Silva: A robot who helped cause the destruction of the Bio Star. Fights both the Bioman team (he's programmed to kill anything with Bio Particles) and Gear (who want to steal his missing Humongous Mecha, Bulgeon).



Recurring Super Sentai tropes:

  • All Your Powers Combined: A few of the team attacks involve this.
  • Boss Subtitles: Introduced this trope to Super Sentai.
  • By the Power of Grayskull!: "Bioman!"; or, their individual names.
  • Calling Your Attacks
  • Color-Coded Characters: The codename pattern consists of using each member's color as the head word and a corresponding number as the tail. This is the number in which the team, in their original composition, first transformed.
  • Cool Airship: The Bio Dragon
  • Cool Bike: Red One's Bio Mach I and Yellow Four's Bio Mach II
  • Cool Car: The Bio Turbo driven by Green Two.
  • Custom Uniform: Yellow Four and Pink Five wear panties molded into their suits. This also happened with the respective female duos from the next two Sentai teams.
  • Eye Catch: The eyecatch features a normal version of Red One and small versions of (Clockwise from bottom left) Blue Three that seems to be sliding from Red One's right shoulder, Pink Five that seems to be performing a superkick, Green Two who seems to be levitating from Red One's left shoulder and Yellow Four. The title card is also seen in the bottom right of the screen. After the break, Bio Robo is shown who seems to be running and holding the bio sword. The Title Card can be seen on the bottom left of the screen.
  • Finishing Move: The Biomen and BioRobo have a plethora of them.
    • BioRobo actually had the largest number of individual sword finishers of any Sentai mecha.
  • Five-Man Band: Available in two configurations.
  • Home Base
  • Humongous Mecha: The mecha components were reduced to just two this time and both were shared between different members of the team.
    • Combining Mecha: Bio Jet 1 (Red and Pink) + Bio Jet 2 (the rest) = Bio Robo
  • In the Name of the Moon: The individual names, followed by "One! Two! Three! Four! Five! ChouDenshi Bioman!.
  • Law of Chromatic Superiority: Shirō can understand animals, but nobody else is shown to have unmorphed powers.
  • Make My Monster Grow: Absent. Gear has five human-sized monsters called the Junoids, which they use over and over and a different giant mecha in each episode. As this prevented the giant monsters from getting much screentime (and thus Toei from getting much of a return on investment), this approach has pretty much stayed unique to Bioman.
  • Mooks: Mechaclones.
  • Monster of the Week: Giant robots known as "Mecha Gigants". From Episode 31 and onward, they're replaced by a series of newer models known as "Neo Mecha Gigants". The newer robots are also unique in that they're piloted by a member of Big Three, while the previous generation of robots (usually) weren't piloted.
  • The Movie: Takes place sometime after Episode 11 (after Jun Yabuki joins the team), but before Episode 31 (while all five Junoids are still alive).
  • "On the Next Episode of..." Catch Phrase:
  • Regular Caller:
  • Robot Buddy: Peebo, again.
  • Supervillain Lair: The Neograd fortress at the South Pole
  • Theme Music Power-Up:
  • Transformation Trinket: Techno Braces
  • Two Girls to a Team: Introduced this trope to Super Sentai with the inclusion of Yellow Four and Pink Five. This helped codify yellow as a gender-neutral color that can be worm by both male and female rangers, and established Yellow and Pink as the standard colors for a female duo.
  • Weapon of Choice

Tropes specific to Choudenshi Bioman

  • Battle Cry: Gear personnel shout "For the Man!"
  • Death by Falling Over: Farrah, after receiving heavy damage, made it back to base before falling down the stairs and exploding.
  • Elemental Powers: The Biomen's swords are powered by this.
  • Fake Shemp: For Mika's last episode, her voice was dubbed over by an uncredited Mayumi Tanaka as Yuki Yajima had only completed ADR for the first nine episodes.
  • Forgotten Fallen Friend: Mika is never mentioned after her death (save for one time in Episode 37, and even then they only mention her by her codename) and it seems as if Jun has always been Yellow Four instead. Although this is understandable, considering Yuki Yajima's abrupt departure from the series.
  • Four Is Death: The first Yellow Four, who was killed off after her actress left the set.
  • Hero Killer: Silva, which leads to...
    • Heroic BSOD: Peebo is terrified of Silva when he first appears, running away and getting as close to a fetal position as he can. (He recovers enough by the end of the episode to assists the team. From a distance.)
  • Identical Grandson: The ancestors of the team who were showered with the Bio-Particles are played by the same actors as their descendants. This became a bit problematic for the show's creators once Mika was replaced with Jun, which is probably why the ancestors were never shown again and the repeated showings of the first flashback were often edited to leave out Mika's ancestor.
  • Infinite Supplies: How the Biomen can live without jobs.
  • Jumped at the Call: A little subversion. At first, Shirou, Shingo, Ryuuta, Mika and Hikaru didn't quite buy Peebo's story, until Gear attacks and forces them to morph and eventually accept their duty... except Mika who went away, only to eventually rejoin next episode.
  • Kick the Dog: Did you have to go and blow up Red One's bird? (However, it was less For the Evulz and because of the chance of Red One using his Dr. Doolittle skills to ask the bird about the evil plan du jour.)
  • Love Triangle: Mason, Farrah and Monster
  • Mid-Season Upgrade: Gear switches to stronger robot monsters and upgrade the big three, so the Biomen receive an extra-boost in Bio Particles note . The three remaining Beastnoids are also rebuilt into stronger forms.
  • Oddly Named Sequel: The third Sentai season that doesn't use the word "Sentai" in its title, following J.A.K.Q. Dengekitai and Battle Fever J.
  • Oh Crap: Happens when the villains realize their plan to assassinate Doctor Man didn't work
  • Punny Name: Blue Three's namenote  is spelled the same way in Japanese as "Bruce Lee"note , the only real difference being the placement of the middle dot.
  • Real Life Writes the Plot: Yuki Yajima, the actress who played the first Yellow Four, left due to some shady circumstances that even today aren't quite clear. Some claim she had a falling out with J.A.C., the stuntworkers union that Sentai hired most of its early actors from, while fellow cast members believe she eloped with someone. Either way, the actress hasn't been heard from since then.
  • Replacement Goldfish: The Black Prince, a Mecha Clone replica of Doctor Man's son, Shuichi. Subversion: Shuichi is actually alive.
  • Soul Jar: One Robot Monster had a counterpart Mechaclone, a MacGuffin Girl named Miki, whose existence allowed him to regenerate damage. She did a Heroic Sacrifice to stop that.
  • The Starscream: Mason attempted a coup...only to learn Doctor Man was ready for it
  • Suicide Attack: One episode had Gear use the Mechaclones as walking bombs.
  • Temporary Substitute: Episodes 15 and 16 were obviously written with Mika in mind.
  • Tomboy and Girly Girl: Mika, then Jun, and Hikaru.
  • Unfriendly Fire: Mason, using Metal Megas, blasts the Biomen and the five Beastnoids, which destroys Aquaiger and Messerbeast.
  • Was Once a Man/ Meaningful Name: There's a reason why the villain's named Doctor Man.

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alternative title(s): Choudenshi Bioman
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