T.J. Detweiler (voice)
Vince La Salle (voice)
Spinelli (voice)
Gretchen Grundler (voice)
Mikey Blumberg (voice)
Gus Griswald (voice)
Ms. Finster / Mrs. Detweiller (voice)
Principal Peter Prickly (voice)
Digger Dave / Randall (voice)
Mikey's Singing Voice (voice)
Becky (voice)
Fenwick (voice)
Dr. Rosenthal (voice)
Dr. Phillium Benedict (voice)
Lunchlady Harriet (voice)
Lunchlady Irma / Ms. Lemon / Opera Director / Dr. Steinheimer (voice)
Cop #1 (voice)
Cop #2 (voice)
Guard #1 (voice)
Guard #2 (voice)
Counselor (voice)
Mort Chalk (voice)
Superintendent (voice)
Coach (voice)
