Gatenmaru

Gatenmaru is moth demon and leader of a group human bandits ( which is unaware that their leader is demon ) that invaded a village where Inuyasha and Miroku tried save the lives of it's people. Gatenmaru sets his eyes on Tessaiga while Inuyasha and Miroku are trapped by his cocoon for watching him suck some woman's blood from her body.The two eventually escape, and Inuyasha becomes driven by his yokai blood and kills Gatenmaru in his demon form.

Gatenmaru had a brother named Garamaru who held a grudge aganist Inuyasha and the gang in episode 100, which ended up failing.

Gatenmaru is voiced by Takehito Koyasu in the japanese anime while Adam Henderson provides voice acting for the English Dub.