Caliban

In appearance, the Caliban is a mutilated and contorted human figure, with individuals varying in size. Regardless of size, they are lumbering creatures, walking on all fours. However, its "hind" legs are actually its arms, with its spine curled backwards and its "front" legs positioned over its own shoulders, with its head between its legs. This disfigurement gives it a slow movement capability, but its sheer body mass is more than potent enough as a weapon alone.