The Aptitude Test

Phillip Van Dyke

Arnold (voice)

Francesca Marie Smith

Helga Pataki (voice)

Jamil Walker Smith

Gerald Johanssen (voice)

Olivia Hack

Rhonda Wellington Lloyd (voice)

Anndi McAfee

Phoebe Heyerdahl (voice)

Justin Shenkarow

Harold Berman (voice)

Dan Castellaneta

Grandpa Phil (voice)

Christopher Walberg

Stinky Peterson (voice)

Ben Diskin

Eugene Horowitz (voice)

Craig Bartlett

Brainy (voice)

Maurice LaMarche

Big Bob Pataki (voice)

David Wohl

Mr. Berman (voice)

Dan Butler

Mr. Simmons (voice; uncredited)

Kath Soucie

Mrs. Berman (voice)