Gravedale High

Rick Moranis

Max Schneider (voice)

Jackie Earle Haley

Gill Waterman (voice)

Frank Welker

Frankentyke / J.P. Ghastly III (voice)

Ricki Lake

Cleofatra (voice)

Kimmy Robertson

Duzer (voice)

Maurice LaMarche

Sid / Chef Sal Monella (voice)

Barry Gordon

Reggie Moonshroud (voice)

Roger Rose

Vinnie Stoker (voice)