Muscle Devil

The Muscle Devil is sadistic and cunning, using trickery to make Denji let his guard down and controlling a little girl's body as a pawn to do so. He has a great hatred towards humans; taking a little girl prisoner to torture her and breaking Denji's arm just as a demonstration of his abilities.

The Muscle Devil's initial form appears as a small cycloptic snake with a weak and innocent appearance to be deceptively vulnerable. By manipulating his muscles he reveals his true form as a large snake-like mass of skinless muscles with multiple eyes and a mouth full of crooked teeth. Muscle Devil innocent form.png|Muscle Devil's innocent form

As a Devil, the Muscle Devil possesses all of the standard devil abilities. * Muscle Manipulation: The Muscle Devil can control any muscles he touches, allowing him to break his opponent's body just by touching them. By manipulating his muscles, the Muscle Devil can increase in size and strength.