A long time ago, they were attacked by a doberman mix and his pack. Black lost his right eye, Hairy got a scar across his right eye, and White lost half of his left ear. They survived the attack and beat the doberman, scaring him and his pack away. That's when they were found by the dogs of the Kiinu Clan and they were welcomed to the group.
Today, the double-knockoff brothers are first, second, and third-in-command of the Kiinu Can. When Mitenshi and her children join Izou in the Ohu army, Hairy thinks they're betraying the Kiinu Clan and he pleads for the rest of his followers which White leaves to get. But when he returns, the Ohu army has allready left with Mitenshi and her children.