In this season, The Grim Adventures of Billy & Mandy is a standalone show, separate from Evil Con Carne, although the ninth episode, a sketch of Malo Con Carne is tied with other two episodes of Billy and Mandy. There were 9 regular episodes in this season, and the half-hour Halloween special, in which Billy, Mandy and Grim face against Jack O'Lantern. This season introduces the boy-wizard Nigel Planter and supporting characters such as Dean Toadblatt, which constitutes a parody of the Harry Potter franchise. Other characters that make major appearances include Mandy's nemesis, the popular and snobby Mindy; Nergal Jr., the son of Nergal and Billy's aunt, Sis; and Jeff the Spider (voiced by show creator Maxwell Atoms), who is hatched from an egg by Billy. Other characters that return are Hoss Delgado, who battles zombie brownies alongside Billy; and Eris, who keeps scheming to create chaos