Os Monstros Voltam às Aulas

Nathan Fillion

Johnny (voice)

Jenifer Lewis

Grandma Tuskmon (voice)

Ali Wong

Jill (voice)

Joe Lo Truglio

Jack (voice)

John Ratzenberger

Bernard (voice)

Christopher Swindle

Phlegm / Rudy / Additional Monsters (voice)

Roxana Ortega

Celia Mae (voice)