Gerald Comes Over

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Olivia Hack

Rhonda Wellington Lloyd (voice)

Lane Toran

Arnold (voice)

Anndi McAfee

Phoebe Heyerdahl (voice)

Justin Shenkarow

Harold Berman (voice)

Dan Castellaneta

Grandpa Phil (voice)

Shari Belafonte

Mrs. Johanssen (voice)

Dom Irrera

Ernie Potts (voice)

Tress MacNeille

Grandma Gertie (voice)

Steve Viksten

Oskar Kokoshka (voice)

Baoan Coleman

Mr. Hyunh (voice)

Mary Scheer

Suzie Kokoshka (voice)

Rick Fitts

Mr. Johanssen (voice)

Ben Aaron

Jamie O Johanssen (voice)

Avriel Epps

Timberly Johanssen (voice)

Joe Purdy

Mr. Purdy (voice; uncredited)