The Armored Muscle Body is Skull's special ability. It enables him to gain a large amount of muscle by using the Cloud Flame's Propagation attribute to make his body tougher, though his body stays as an infant's. While under its effects, Skull seems to be impervious to all damage to the point where being knocked into a stone hard enough to shatter it doesn't faze him. He was also hit by a powered-up Dying Will Flame Lobster several times and only mildly annoyed afterwards.