Ah-un

Ah-Un (阿吽,Aun) is Sesshomaru’s beast of burden. He is one of the only two yōkai in the series who is explicitly stated to be a herbivore. Despite traveling with Sesshomaru for centuries, he has no name until Rin gives him one, calling the right head “Ah” and the left head “Un“. Ah-Un can fire yōkai energy from both mouths. The right head shoots blue beams of lightning, while the left shoots green lightning that can control clouds and possibly the weather. A grey cloud-like gas trails from his legs in flight, similar to Kirara’s flames.

On their journeys, Rin and Jaken often rest on his back to fly over great distances. When Sesshomaru leaves Rin in a safe place, Ah-Un stays with her as her protector. He saves Rin from a group of lesser demons while she is collecting herbs to save Jaken from being poisoned by Naraku’s Saimyōshō. Ah-Un also defeats many of Setsuna no Takemaru’s zombie warriors in InuYasha the Movie: Swords of an Honorable Ruler.