Axolotl

Powers and Abilities
Axolotl can regenerate his limbs and flesh nearly instantaneously. His regenerative powers are limited to his limbs; his internal organs cannot be revived. If part of an organ is damaged, Axolotl can heal and regenerate it, however if the entire organ is destroyed, it cannot be brought back. Because of this, Axolotl wears armour and a helmet to protect his vital organs.