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Hakaider (ハカイダー Hakaidā) is the rival of Kikaider and one of the main characters of the Kikaider franchise. He is an android created by Doctor Den Komyoji and repurposed by the DARK organization to target Kikaider. He is known for his whistling when he makes an appearance.

In his human form he is known as Saburo. Considered as a "younger brother" to Jiro/Kikaider, Hakaider was one of the androids Komyoji was forced to make by Professor Gill. But unlike the other DARK androids, Saburo is a cyborg in the retrospect that Dr. Komyoji's brain was surgically transplanted into him as Gill's ace against Jiro. However, though superior to Kikaider, Hakaider needs periodic blood transfusions from Dr. Komyoji's body to stay active.

After the fall of DARK, Hakaider would return as the leader of the Hakaider Squad with the brain of Professor Gill inside his head instead of Dr. Komyoji's. He targets Akira, the son of Professor Gill, in order to use the blueprints on his back to complete the Giant Devil robot.

He is voiced by late Shōzō Iizuka, who also voiced numerous other villains in Tokusatsu shows including High Priest Darom, Satan Egos, Fuhrer Hell Saturn, Demon King Psycho, Great Emperor Kubilai and Zodiac. His human form Saburo was portrayed by Jouji Mayama.


Android Kikaider[]

Hakaider was awakened by DARK after they captured Dr. Komyoji and transferred his brain into Hakaider's body. Upon his awakening, Hakaider was told by Professor Gill that his only purpose was to destroy Kikaider, which Hakaider took to be his only directive and ignored all other orders from him. He first appeared to ambush Kikaider while he was on the run from the police. He later saved Mitsuko and Masaru Komyoji from being kidnapped by Starfish Purple, not wanting to use dirty tactics to defeat Kikaider. As Saburo, Hakaider would introduce himself to Mitsuko and Masaru as Kikaider's "younger brother" and stated he was created by their father to destroy Kikaider should he ever go rogue. He later gave Masaru a "Death Whistle" which could paralyze any machine he pointed it at and told him to play it to summon him next time he saw Kikaider.

However, Saburo would not get his wish to destroy Kikaider, as Kikaider was destroyed by the Destructoid Red Mine Toad before Hakaider could defeat him. As Red Mine Toad had seemingly destroyed his arch-nemesis, Hakaider turned his rage onto the Destructoid and destroyed Red Mine Toad after disabling his body bomb with one of his knives. However, with Kikaider destroyed, Hakaider now had no purpose for existing and began to resent the fact that he had been created at all. Hakaider chose to turn against his creator and kill him in order to get revenge for his creation. He went to strangle Professor Gill, but Gill told Hakaider that he was not the one responsible for creating him and that it was Dr. Komyoji who had built Hakaider in the first place. Hakaider thus went down to the cell block where Komyoji's body was being kept along with Mitsuko and Masaru. After tearing down the door, Hakaider went to kill Dr. Komyoji, but was stopped by a half-repaired Kikaider, who promised to fight Hakaider if he left Dr. Komyoji alone. Hakaider agreed, but told Mitsuko to reattach his legs as he did not want to fight a handicapped Kikaider. Because Kikaider was still weakened from having just been repaired, Hakaider reverted to his human form of Saburo and instructed Jiro to do the same so they could fight more evenly.

While Mitsuko, Masaru and Hanpei Hattori fled with Dr. Komyoji's body, Jiro and Saburo fought each other through DARK's base, battling numerous Android Men along the way. However, their fight was interrupted by White-Bone Flying Squirrel, who was sent by Professor Gill to take out both of them. Hakaider was ultimately destroyed by White-Bone Flying Squirrel and in his last moments lamented to Jiro that he had not been destroyed by him.

Kikaider 01[]

After the fall of DARK, the body of Hakaider was revived by surviving DARK scientists and had the brain of Professor Gill implanted inside it. Reborn, Hakaider made a squad of duplicate Hakaider androids called the Hakaider Squad, each implanted with the brain of the DARK scientists. The Hakaider Squad sought out the son of Professor Gill, Akira, to gain the hidden blueprints on his son's back for his doomsday weapon the Giant Devil to destroy the world. However, their plans were thwarted by the arrival of Jiro's "older brother" Ichiro, aka Kikiader 01. They also faced another obstacle in the form of the criminal organization SHADOW, which also sought to capture Akira and create the Giant Devil.

After the Hakaider Squad was destroyed by 01 and Kikaider, Hakaider was rebuilt by SHADOW and forced to serve them, becoming one of the top lieutenants of Big Shadow alongside Shadow Knight, who Hakaider would become rivals with.

Hakaider was destroyed in the final episode by Bijinder, but was revived by the robot repairing machine SHADOW had forced Komyoji to build. He was ultimately destroyed for good by a combined attack from 01, Kikaider and Bijinder, triggering the bomb Komyoji had secretly implanted in the machine and causing it to explode and take SHADOW's headquarters with it.

Mechanical Violator Hakaider (1995 film)[]

During the 1995 Toei Super Hero Fair, a Hakaider feature film directed by Garo creator Keita Amemiya was shown. Unlike most portrayals, Hakaider was an anti-hero. Here, Hakaider's human form was called "Ryo" and he was originally an android created by the ruler of Jesus Town, Gurjev, to enforce his twisted sense of justice through absolute obedience. After Hakaider developed his own free will however, Gurjev had him disposed of, only for some renegade scientists to take his body and escape.


Saburo first makes himself known to Jiro when he kills the DARK android Gold Bat. Later, when Jiro accompanies Mitsuko and Masaru to their Mother's home town, Saburo formally introduces himself before using his whistle to control Jiro and have him overload from not submitting to the GEMINI system. But when that failed, Hakaider decides to kill Kikaider the old fashioned way before Dr. Komyoji's brain overrides him. By that time he regains control, Hakaider is betrayed by Gill who has the other Hakaider drones gun him down with Komyoji's brain undamaged as Mitsuko takes it. In his final moments, the headless Hakaider strangles Gill to keep him from escaping as DARK headquarters collapse around them.

Kikaider (REBOOT)[]

Hakaider is the nemesis of Kikaider. He fights Kamen Rider Gaim and Kikaider in a crossover episode of Kamen Rider Gaim.

After a colleague in DARK sent him Hakaider, Ryoma Sengoku briefly transplanted his brain into the robot's body to test its abilities for the evil organization DARK. However he soon returned to his original body after losing control when the robot's destruction program caused him to go insane.


The identity of Hakaider has been used by several people over the course of the franchise.



  • In an interview, Star Wars creator George Lucas mentioned Hakaider as an inspiration in creating Darth Vader.
  • The Hakaider that appears in Kikaider 01 is nicknamed by fans as "Gill-Hakaider" due to it possessing Professor Gill's brain. Because of this, it is a common misconception by fans that the two are the same person when Gill is really a separate being from Gill-Hakaider, as shown by his spirit being summoned by SHADOW in episode 12.
    • However, in both the manga and Kikaider: The Animation, Gill and Gill-Hakaider are depicted as the same entity.

See Also[]


           Kikaider logo Villains

Professor Gill | Hakaider | Android Men
Destructoids: Gray Rhino King | Green Mantis | Orange Ant | Blue Buffalo | Yellow Jaguar | Black Horse | Blues Kong | Carmine Spider | Red Condor | Scorpion Brown | Gold Wolf | Silver Cat | Pink Tiger | Silver Tortoise | Test Kikaider | Golden Bat | Rouge Jellyfish | Red Hornet | Black Chameleon | King Crab Maroon | Blue Water Scorpion | Purple Rat | White Saw Shark | Pink Armadillo | Orange Snail | Green Mammoth | Violet Turban | Red Devil Stinger | Sponge Green | Red Squid | Octopus Gold | Blue Electric Eel | Devil Face Crab Red | Black Echidna | Tiny Echidna | Black Crow | Multi-Colored Sand Lizard | Starfish Purple | Angler Brown | Grasshopper Gray | Red Mine Toad | White Bone Flying Squirrel

Hakaider Squad
Boss Hakaider | Red Hakaider | Blue Hakaider | Silver Hakaider | Androbots

Big Shadow | Shadow Knight | Hakaider | Zadam | Waruder | Bijinder | Giant Devil | Shadowmen
Deathbots: Crimson Turtle | Ghost Woman | Bakeneko | Shadow Rokuro-Kubi | Oiwa Owl | Grimreaper Robot | Shadow Mummy | Shadow Golem | Poisonous Mendicant | King Indian | Vampire Bats | Scorpion Strong | Automated Skeleton | Thorned Starfish | Pigman | Mad Pig | Tengu Flying Squirrel | Hell Kappa | Mermabot | Raijin Plus and Raijin Minus | Pollution Catfish | Ink Sumi Squid | Big Gorilla | Mini Gorilla | Crazy Cuckoo | Kimono Poison Fang | Spaceman Robots | Satan | Roboshadows | 01 Shadow | Bijinder Shadow | Waruder Shadow | Aqualungbots | Warrior Ronin Robots

Jesus Town
Gurjev | Michael | Heavy Armored Soldiers