Kikaider Zero One

Kikaider 01 (キカイダー01 Kikaidā Zero Wan) (Pronounced as Kikaider Zero One), is a tokusatsu superhero TV series, and a sequel series to Android Kikaider. Produced by Toei Company Ltd., it was broadcast on NET (now TV Asahi) from May 12, 1973 to March 30, 1974, with a total of 46 episodes. Its title in Hawaii is Kikaida 01 (based on the Japanese title). Kikaider 01 made an appearance alongside Kikaider, Inazuman, and Zubat in the 2011 movie OOO, Den-O, All Riders: Let’s Go Kamen Riders.

The noted robotics expert Dr. Kohmyoji created a powerful android to protect Japan from evil forces. When Hakaider starts his own evil organization, Dr. Kohmyoji's android, Kikaider 01, awakens to fight Hakaider.

Hakaider has three assistants, Red Hakaider, Blue Hakaider, and Silver Hakaider. Together, they devise various schemes to cause destruction, but Kikaider 01 stops them all. Kikaider appears to assist Kikaider 01. Their chief goal is to capture a young boy, named Akira.

After Hakaider's attempts fail, a new, mysterious character appears, Shadow Knight. Shadow Knight is member of a competing, evil organization, SHADOW. When SHADOW proved to be more powerful than Hakaider, Hakaider unwillingly becomes a member of SHADOW.

It was later revealed that Hakaider has the brain of Professor Gill (also from the Kikaider TV series) within him. Professor Gill had designed a powerful robot, and had tattooed the plans onto his two sons: Akira and his brother Hiroshi. Throughout the series, SHADOW helps Gill in building his robot, and Kikaider 01's fight to stop them.