Secret Society Egos
Secret Society Egos is a religion of mad egocentrists who intend to plunge the world into chaos.

Satan Egos Satan Egos
The mysterious head, entirely draped in black. He creates the Egos Monster's inside the Egos heart, calling them "My beloved Children". They call him "Father." He is ultimately slain by the Lightning Sword Rocketter.

Commander Hedda
High priest of Egos. Later becomes the Hedda Monster and is slain as such by the Battle Fever's new attack, Battle Fever Power.

Egos American branch officer who came to Japan to aid Hedda with her super strength. She is responsible for all the assassination's in America. She allowed herself to be captured by Battle Fever after attacking and replacing several police men with disguised cut-men, with whom she stole a Billion Yen to give to Egos. Then thought herself aken to the Battle Fever Base but in reality taken to warehouse.She carries a hand mirror with a tracker in it. She uses it usually to fire solar beams or bludgeon people with it. She was killed in the collapsing castle as Satan Egos fled. Her last words were begging Egos to help her.

Cutmen Cutmen
Grunts in grey and black armed with MP40 submachine guns.

Egos Fighters
Black fighter planes with bat wings.

Egos Mutants
Divine children of Egos created by the heart-like Egos Monster Making Machine. Many from episode 5 onward have 'little brother' giant robot doubles.