Choujuu Sentai Liveman(1988)

Friends, why did you sell your souls to the devil?

Choujuu Sentai Liveman is a Japanese tokusatsu series following six Academia students whose friendship fractures when three of them defect to the evil Volt army. The remaining trio—Yusuke, Jo, and Megumi—transform into the Liveman to stop their former classmates and prevent Volt's conquest of the world. Aided by the android Colon and allies they meet along the way, the heroes must balance their mission to save humanity with their desperate hope of turning their corrupted friends back to good. The series blends action-packed monster battles with the emotional weight of fighting those you once trusted, exploring themes of loyalty and redemption against a backdrop of colorful superhero spectacle.