* '''Poison immunity''': This creature is immune to all forms of poisoning: they cannot receive [[Venom]] nor the [[Effects#Body|'''Cyanide poisoning''' effect]].
* '''Sleep immunity''': This creature never needs to sleep, cannot feel [[Fatigue]] and cannot receive the [[Effects#Body|'''Forced sleep''' effect]], effectively making them immune to tranquilizers.
* '''Spooky and Scary''': This creature is immune to the effects of [[limb damage|'''damaged''' and '''disabled limbs''' ]] (including the effect normally induced by a [[fracture]]). To destroy a skeleton, the head, upper body or lower body must be '''severed'''.