Helga Blabs It All

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)

Ben Diskin

Eugene Horowitz (voice)

Christopher Walberg

Stinky Peterson (voice)

Elliott Gould

Tress MacNeille

Grandma Gertie (voice)

Baoan Coleman

Mr. Hyunh (voice)

Adam Wylie

Curly Gammelthorpe (voice)

Steve Viksten

Oskar Kokoshka / Caesar (voice)