Read more about Choujinki Metalder at: Wikipedia

Official Site: Toei Company

is the sixth and shortest entry of the Metal Hero Series, running from March 16, 1987, to January 17, 1988, for only 39 episodes. The action footage of Metalder was adaptated for the first two seasons of VR Troopers. On February 21, 2007, Toei released the complete Metalder TV series and film on a seven-disc DVD set.

For distribution purposes, Toei refers to this television series as Metalder.

In 1945, Dr. Ryūichirō Kōga designed Metalder as a top-secret weapon for the Japanese Imperial Army for use in the Pacific War, modeling it after his late son, Second Sub-lieutenant Tatsuo Kōga. However, the pacifistic Dr. Kōga put Metalder to sleep in the Silver Carcass base and left for the America to work for NASA. During the 42 years, Dr. Kōga's former colleague Major Muraki became the evil God Neros, ruler of Neros Empire. God Neros sends out his massive armies to kill Dr. Kōga, who learned of their organization and returned to Japan to activate Metalder. Kōga desperately tries to activate his android creation, who he named Ryūsei Tsurugi, but the android is unable to understand what to do. In order to give Ryūsei a "purpose", Kōga runs out of the Silver Carcass base, allowing Neros' troops to kill him. Suddenly seeing his creator die, Ryūsei becomes shocked, and soon is beaten by Neros' troops. Ryūsei becomes fueled with rage, evoking the conversion to his 'true' form, the android known as Metalder. After a brief battle with Coolgin (which he loses), Ryūsei goes onward, meeting future friend Mai Ōgi.

is an android built by Dr. Koga at the end of World War II originally as a countermeasure against the Americans. He was hidden in a secret base of the Japanese Imperial Army until Dr. Koga activated him years later to fight the Neros Empire. His human guise, , is directly modeled after that of Dr. Koga's son Tatsuo. Whenever his energies reach a peak from rage, with the cry , he transforms into his metallic form. Like Tatsuo, he loves music and plays the saxophone from time to time. His Reflection Circuit gave him the same feelings as humans and a sense of right and wrong. Powered by 'super-gravitational energy', his killing techniques include "Laser Arm", "G-Kick", "Metal Tornado" spinning kick, "Head Crash" ram, "Plasma Punch", "Metal Bomber" punching attack from above, And "1000 Hand Punch". At the end of the series he defeats God Neros but in the process is greatly damaged, nearly resulting in his destruction. With Kita's help, Metalder is spared from destruction but at the cost of his human form.

Choujinki Metalder has not been a contender in any CBUB matches.