An ancient tortoise known to the beavers as "Boss," Genoh enjoys the company of the elderly, and doesn't like them to be disrespected. He joins the Prince's army at the request of an elderly member in his army. He is extremely intelligent, and bears a unique rune of interest to Levi.

Other then the elderly, Genoh also enjoys the company of other monsters. He convinces Byakuren to stay and help the Prince because he can speak her language. He wants to be friends with the snake, but she seems less interested in that. - Matt620 (article), Basel (image)