Guy Slugger

Glacier Warrior Guyslugger (氷河戦士ガイスラッガー) is a Japanese sci-fi anime series created by Shotaro Ishinomori. It aired on TV Asahi in 1977 for 20 episodes.

Plot
30,000 years, an ancient Antarctic civilisation called the Soron Kingdom (ソロン王国) was invaded by the terrifying Alien Inbems. To preserve the planet's only hop, 5 youths were chosen to become modified Cybernoids called the "Guy Sluggers". Unfortunately before they were able to sortie, the Guy Sluggers' ship encountered trouble and the artificial hibernation system malfunctioned putting the warriors into sleep beneath the artic ocean depths while the kingdom was destroyed and the Earth plunged into a long Ice Age.

Time passed into the present, the Inbems have returned to invade the Earth and the Guy Sluggers have awakened only to find their whole planet changed and their home no more. Even still, the Guy Sluggers take up the cause to use their ancient Solon technology to defeat the aliens and defend their home.