Abner Cadaver is Rottytops and Poe's brother. When the three zombie siblings are together, bad things happen, and even other zombies are fearful and mistrustful of the trio. Though rough around the edges, Abner is a devoted older brother who cares deeply about his siblings; he chides Rottytops for her pathological inability to stay out of trouble, and works hard with Poe to keep his family sane without having to eat the brains of those in Sequin Land.