Haja Taisei Dangaiou
English title: Great Planet Evil-Destroyer Dangaio
Japanese title: 破邪大星弾劾凰 [ダンガイオー]
Alternative titles: Dangaioh, Dangaio, Dangaioh: Hyper Combat Unit, Haja Taisei Dangaio
Type: OVA
Source: Original
Episodes: 3
Status: Finished Airing
Aired: Sep 28, 1987 to Jul 25, 1989
Duration: 45 min per ep
Rating: PG-13 - Teens 13 or older
Studios: AIC, Artmic
Producers: Network
Licensors: VIZ Media, Manga Entertainment
Genres: Action, Adventure, Sci-Fi
Themes: Mecha

Four psychic teenagers—Mia Alice, Roll Kran, Lamba Nom and Pai Thunder—are brainwashed by the scientist Dr. Tarsan as pilots of his greatest experiment—the giant robot Dangaioh. But as their memories slowly return, these pilots use their abilities and Dangaioh to combat the tyranny of Captain Galimos and the Bunker Space Pirates. 

(Source: ANN)