Dark Grenchlers are Grenchlers that the Ing have possessed. Although these Darklings are tougher than the original animal, their shell is still vulnerable to Missile blasts. They have the common darkling weakness to Light Beam attacks as well. A related creature, the Grapple Guardian, is an adult Grenchler possessed and mutated by the Warrior Ing holding Samus Aran's Grapple Beam item.