Hyouga Senshi Gaislugger

A cyborg warrior from an ancient Antarctic kingdom awakes 30000 years later from an accidental hibernation to find the Earth changed and an old alien enemy on the verge of invasion. It's up to Guyslugger to use his ancient technology to defeat the aliens.

Neo Human Casshan

The brilliant Dr. Azuma created many robots to aid humankind. However, during a thunderstorm his lab was struck by lightning, corrupting the programming of one of his robots, BK-1, who renames himself Braiking Boss and declares that instead of serving mankind, mankind will now serve him! He brings other robots together into an overwhelming army bent on enslaving the human race. Tetsuya, Dr. Azuma's son, asks his father to turn him into an indestructible android so that he will have the power to destroy the threat his father inadvertently created. Shortly thereafter, Braiking Boss captures Dr. Azuma and his wife, Tetsuya, now renamed Casshern, sets out to turn the tide of the war and rescue his parents, with the help of his girlfriend, Luna, and robot dog, Friender.

Cyborg 009: Legend of the Super Galaxy

The cyborgs are no longer on duty, they live normal lives until a mysterious space ship lands on earth. The only survivor on the ship warns about an evil conqueror called Zoa that wants to conquer the universe, which means the cyborgs are back in action... (Source: Anime News Network)

Hoshi no ko Chobin

Chobin is a cute little alien prince from another planet, who crash landed on earth. Looking for his mother, he has a magical bracelet that will help him on his quest.