Lane Toran

Arnold (voice)

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Tress MacNeille

Grandma Gertrude (voice)

Dan Castellaneta

Grandpa Phil (voice)

Maurice LaMarche

Big Bob Pataki (voice)

Kath Soucie

Miriam Pataki (voice)

Olivia Hack

Rhonda Wellington Lloyd (voice)

Christopher Walberg

Stinky Peterson (voice)

Anndi McAfee

Phoebe Heyerdahl (voice)

Baoan Coleman

Mr. Hyunh (voice)

Hiep Thi Le

Mai (voice)

Vincent Schiavelli

Mr. Bailey (voice)

Dom Irrera

Ernie Potts (voice)

Steve Viksten

Oskar Kokoshka (voice)