He can easily regenerate, and if a limb is severed from the body and is reattached it will heal back to normal. If the limb has been destroyed or lost he can regrow them (this will take longer, sometimes can last a few hours before the limb has returned to its original form) His regeneration ability can be very quick depending on the situation, and if for some reason his body is extremely destroyed it'll take days or weeks for him to return back to normal.