Discover
Original Release
09/11/1999
US Release
09/11/1999
Cast
| Name | Character |
|---|
| Dan Butler | Mr. Simmons |
| Dan Castellaneta | Arnold's Grandpa / Grandpa Phil (voice) |
| Toran Caudell | Wolfgang |
| Sam Gifaldi | Sid |
| Olivia Hack | Rhonda Wellington Lloyd |
| Spencer Klein | Arnold / Arnold (voice) |
| Tress MacNeille | Arnold's Grandma |
| John Mariano | Vic |
| Anndi McAfee | Phoebe Heyerdahl |
| Justin Shenkarow | Harold Berman / Harold Berman (voice) |
Directors
Writers
Steve Viksten, Celia Bonaduce, Michelle Lamoreaux, Craig Bartlett, Joe Ansolabehere, Joe Purdy
Creators
Cast
| Name | Character |
|---|
| Dan Butler | Mr. Simmons |
| Dan Castellaneta | Arnold's Grandpa / Grandpa Phil (voice) |
| Toran Caudell | Wolfgang |
| Sam Gifaldi | Sid |
| Olivia Hack | Rhonda Wellington Lloyd |
| Spencer Klein | Arnold / Arnold (voice) |
| Tress MacNeille | Arnold's Grandma |
| John Mariano | Vic |
| Anndi McAfee | Phoebe Heyerdahl |
| Justin Shenkarow | Harold Berman / Harold Berman (voice) |
| Jamil Walker Smith | Gerald Johanssen / Gerald Johanssen (voice) |
| Steve Viksten | Oskar Kokoshka |
| Christopher Walberg | Stinky Petersen / Stinky Peterson (voice) |
| David Wohl | Principal Wartz |
| Francesca Marie Smith | Helga Pataki (voice) |
Producers
| Name | Role |
|---|
| Craig Bartlett | Executive Producer |
| Mary Harrington | Executive Producer |
| Steve Viksten | Producer |
| Donna Smith | Producer |
| Steve Socki | Producer |
| Joseph Purdy | Producer |
