Chouja Raideen

Hishou, Ginga, Ace, Hayate, and Ikazuchi all work at a studio doing various idol-related jobs at the request of their manager, Reiko. But in reality, These five teenagers are really the Reideens, a group of superheros who fight the Super Devils sent by Lushu, a mysterious being. Little do the Reideens know, these Super Devils are being sent for a more important purpose....

(summary from AnimeNewsNetwork)

38 TV Episodes Animation by Sunrise

See also remake of series - Reideen (2007)