Heracles Muscle ( ハーキュリーズ筋肉, Haakyariizu Kinniku) is an alpha league professional hero who is in direct league with the global defense agency. Based solely upon her appearance alone, she is an otherwise average and generic girl, when in reality she is one of the strongest most powerful living creatures on the planet earth, possessing godlike strength. Because of her appearance and stature, many individuals often mistake her partner, invincible mask, as heracles muscle.