Cast (8)
Spencer Klein
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)
Blake McIver Ewing
Eugene Horowitz (voice)
Dan Castellaneta
Grandpa Phil (voice)
Spencer Klein
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)
Blake McIver Ewing
Eugene Horowitz (voice)
Dan Castellaneta
Grandpa Phil (voice)
Crew (4)
Sound
Francesca Marie Smith
Theme Song Performance
Jim Lang
Music
Production
Gábor Csupó
Producer
Craig Bartlett
Producer