Prof. Gill recreates the 13 Destructoids defeated by Kikaida, and gives them three times their original power in order to test them against Silver Tortoise.
EP15 Golden Bat: Cursed Shadow from the PastOct 14, 1972
Golden Bat approaches Mitsuko and Masaru in the form of Taro, their older brother, who was supposedly killed by DARK.
EP16 Rouge Jellyfish: Invitation to the River StyxOct 21, 1972
Destructoid Rouge Jellyfish is conducting experiments with poisonous mini-jellyfish in a polluted river.
EP17 Red Hornet: Hostage TerrorOct 28, 1972
Under orders from DARK, Red Hornet begins spraying toxic gasses aimed at destroying the environment.
EP18 Black Chameleon: The Grand HeistNov 04, 1972
Black Chameleon manages to hijack a load of atomic uratonium. Pursued by Jiro, he takes Mitsuko and Masaru hostage.
EP19 King Crab Maroon: Keeper of the Death RayNov 11, 1972
King Crab Maroon steals a 50-carat emerald ring which he needs to complete his new weapon.
EP20 Blue Water Scorpion: The Skull Weed ConspiracyNov 18, 1972
Blue Water Scorpion adds a toxic substance to the drinking water, in order to turn the people into puppets of DARK.
EP21 Purple Rat: Brutal Fangs of PoisonNov 25, 1972
Purple Rat steals into a laboratory dedicated to communicable diseases in order to create a new DARK plague.
EP22 White Saw Shark: Twelve-Hour NightmareDec 02, 1972
White Saw Shark takes over an apartment complex and sets up a laser gun. Prof. Gill's plan is to shoot down a plane filled with special fuel into a densely populated area.
Jiro manages to save a little girl from Starfish Purple. Meanwhile, DARK forces Dr. Komyoji to create the evil warrior, Hakaider.
EP38 Hakaider: Kikaider KillerMar 24, 1973
Jiro escapes from prison but is attacked by Hakaider. Jiro is overpowered, but Hakaider is unable to destroy him.
EP39 Kikaida: Wanted Dead or AliveMar 31, 1973
Angler Brown has plans to brainwash children and turn them into warriors. Kikaider saves the kids but slips away quickly to avoid the police.
EP40 Crisis! Jiro Stops FunctioningApr 07, 1973
Grasshopper Gray builds an antenna that amplifies sound 3000 times. Masaru saves a young boy who is being attacked by Grasshopper Gray.
EP41 Jiro Blows Apart!Apr 21, 1973
Mitsuko and Masaru are lured to the DARK base. Jiro stops them and proceeds alone, but he's bushwacked by Red Mine Toad. He changes into Kikaider, but gets blown to pieces.
EP42 Hakaida RebelsApr 28, 1973
Hanpei brings Kikaider to Mitsuko in pieces. Hakaider destroys Red Mine Toad who had downed his arch rival Kikaider. Then, Hakaida is defeated by Skeleton Flying Squirrel.
EP43 Jiro's End or Dark's Demise?! - Final EpisodeMay 05, 1973
Mitsuko succeeds in surgically returning the brain in Hakaida's head to her father, but Dr. Komyoji doesn't regain conciousness until...
A transforming super-android, on the run from an evil organization, fights rampaging robot monsters and helps his creator's daughter & son find their lost father.