Cain

was a young male Bount whom Jin Kariya had left in Koga's care many years ago.

Character Outline
Cain has cropped reddish-brown hair and blue eyes, and is often seen with a similar expression to Ichigo Kurosaki's. He states that before he came to live with Koga, he had a difficult life. He died after summoning his doll and coaxing it to use its powers before it had time to rest, resulting in the doll killing him. This death affected Koga profoundly, causing him to dislike killing the young.

Doll
is Cain's doll. At first it appears as a small creature in the shape of a bean, but transforms itself to look like a praying mantis-like creature. When Cain first summoned it, he asked that it perform something amazing like Dalk, but Waineton tells him that he is still tired. When Cain asks him once more, Waineton tells him that he will show his power only after Cain shows him his own by means of a test. Cain is killed by Waineton shortly after. 