The Targeted Aoba School
The Gerinya threaten the earth with destroying all satellites if they do not deliver the robots. Arbegas will unite to counterattack on a risky offense.
Aired 13/04/1983EP 3 - The Targeted Aoba School

1983
Lightspeed Electroid Albegas
Three talented students of a technical high school, Daisaku, Tetsuya and Hotaru create award-winning robots as part of a school competition. At this time, the evil Derinja race that plans control of all space extends its ambitions to Earth. To combat this threat, Hotaru's father, Professor Mizuki, takes the three robots and modifies them for battle. Albegas, a super robot, is born.
(Source: Wikipedia)