Bud is one of Poison Ivy's loyal pet hyenas in the Batman animated series and related media. Alongside his companion Lou, Bud provides comic relief and occasional menace through his antics. Though not a major character, Bud is closely associated with Harley Quinn and Poison Ivy, often seen accompanying them during their schemes. In the Batman universe, Bud's presence adds a touch of unpredictability and danger, highlighting the unique bond between Gotham's villains and their unusual animal companions.