Helga Pataki (voice)

Gerald Johanssen (voice)

Grandpa Phil (voice)

Harold Berman (voice)

Phoebe Heyerdahl (voice)

Stinky Peterson (voice)

Arnold (voice)

Arnold (voice)

Rhonda Wellington Lloyd (voice)

Arnold (voice)

Sid (voice)

Eugene Horowitz (voice)

Brainy (voice)

Grandma Gertie (voice)

Miriam Pataki (voice)

Oskar Kokoshka (voice)

Big Bob Pataki (voice)

Ernie Potts (voice)

Mr. Simmons (voice)

Principal Wartz (voice)

Eugene Horowitz (voice)