Kyokotsu

凶骨

Kyokotsu is the first to appear in both the anime and manga and is the first sign of the existence of the Shichinin-tai. He is presumably the weakest of the seven despite his abnormal size. His appetite for human flesh makes him a cannibal, but he eats youkai flesh as well. He does not use any weapons to fight except his bare hands, and can usually crush an enemy within seconds. He's not the smartest of the army either -Inuyasha.wikia.com