| Voice | Phillip Van Dyke (as Arnold), Francesca Marie Smith (as Helga Pataki / Sheena), Anndi McAfee (as Phoebe Heyerdahl), Christopher Walberg (as Stinky Petersen), Justin Shenkarow (as Harold Berman), Ashley Buccille (as Lila Sawyer), Jessica Sodd (as Marcy), Olivia Hack (as Rhonda Wellington Lloyd), Ben Diskin (as Eugene Horowitz), Adam Wylie (as Curly Gammelthorpe), Maurice LaMarche (as Big Bob Pataki), Kath Soucie (as Miriam Pataki), Dan Castellaneta (as Arnold's Grandpa), Tim Curry (as Leichliter), Dan Butler (as Mr. Simmons), Baoan Coleman (as Mr. Hyunh), Steve Viksten (as Oskar Kokoshka) |
