Beast King is a large, very muscular humanoid lion with a full mane and tail. His humanoid, five-digit hands have sharp claws and padded four-toed feet. He wears a black shirt, animal furs on his shoulders, and a leopard-skin cloth around his waist, secured by heavy chains and a belt with a lion-head buckle. There are bracelets on both his wrists and ankles and bracers on both biceps.