Hiroshi Shibata

Shibata (柴田 Shibata) is a powerful Esper, member of the terrorist organisation Claw, and a part of the Super 5.

Powers & Abilities
Shibata can psychically control his muscle mass via his brain, which sends signals non-stop to his muscles, causing them to expand, unless he stops it. If he is rendered unconscious, he becomes unable to hold back these signals, causing his muscles mass to exponentially increase.