Sanada Nyūdōunsai also known as Unsai, is the leader of the Sanada Clan of ninja dogs. His pack makes their home in a tall thick tree, with him as the leader inside a giant treehole. His Clan's tradition is to prefer neutrality during the times of conflict. He can stand with two feet. Riki asked Unsai to join in the fight with Akakabuto, but he seemingly refused.