Cassidy "Cass" better known as Aunt Cass is the sister of the late Mrs. Hamada, the sister-in-law of the late Mr. Hamada and overworked but always supportive aunt and guardian of brothers Hiro and the late Tadashi from Disney's 2014 animated feature Big Hero 6 and a recurring character in its sequel television series Big Hero 6: The Series. She serves as the focus of episode 2 of Baymax, and she is considered to be a part of Little Hero 6 in the finale.
