Andrew Lawrence

as T.J. Detweiler (voice)

Rickey D'Shon Collins

as Vince La Salle (voice)

Pamela Adlon

as Spinelli (voice)

Ashley Johnson

as Gretchen Grundler (voice)

Jason Davis

as Mikey Blumberg (voice)

Courtland Mead

as Gus Griswald (voice)

April Winchell

as Ms. Finster / Mrs. Detweiller (voice)

Dabney Coleman

as Principal Peter Prickly (voice)