first brother Shiro: the one with black hair and glasses, is a nerd, very smart, and very logical, he's also very kind and only likes his adopted brothers (Kreet and Yuri) and his master. second brother Kreet: blond hair, a bit of a prankster, and troublemaker, he's always getting into trouble from something stupid he knows he shouldn't do, is sometimes kind to his adoptive brothers (Shiro and Yuri) and his master third brother Yuri: blue indigo hair, very quiet, barely talks, is very kind to his master and adoptive brothers (Kreet and Shiro)