Discover
Original Release
12/04/1999
US Release
12/04/1999
Cast
| Name | Character |
|---|
| Francesca Marie Smith | Helga Pataki / Helga Pataki (voice) |
| Spencer Klein | Arnold / Arnold (voice) |
| Anndi McAfee | Phoebe Heyerdahl |
| Justin Shenkarow | Harold Berman / Lil' Harold / Harold Berman (voice) |
| Kathy Baker | Dr. Bliss |
| Maurice LaMarche | Big Bob Pataki |
| Kath Soucie | Miriam Pataki |
| Nika Futterman | Olga Pataki |
| David Wohl | Principal Wartz |
| Dan Butler | Mr. Simmons |
Directors
Writers
Joe Ansolabehere, Steve Viksten, Craig Bartlett, Michelle Lamoreaux
Creators
Cast
| Name | Character |
|---|
| Francesca Marie Smith | Helga Pataki / Helga Pataki (voice) |
| Spencer Klein | Arnold / Arnold (voice) |
| Anndi McAfee | Phoebe Heyerdahl |
| Justin Shenkarow | Harold Berman / Lil' Harold / Harold Berman (voice) |
| Kathy Baker | Dr. Bliss |
| Maurice LaMarche | Big Bob Pataki |
| Kath Soucie | Miriam Pataki |
| Nika Futterman | Olga Pataki |
| David Wohl | Principal Wartz |
| Dan Butler | Mr. Simmons |
| Rusty Flood | Little Arnold |
| Craig Bartlett | Brainy |
| Katie Bartlett | Little Helga |
| Jamil Walker Smith | Gerald Johanssen (voice) |
| Dan Castellaneta | Grandpa Phil (voice) |
| Christopher Walberg | Stinky Peterson (voice) |
Producers
| Name | Role |
|---|
| Craig Bartlett | Executive Producer |
| Mary Harrington | Executive Producer |
| Steve Viksten | Producer |
| Joseph Purdy | Producer |
| Donna Smith | Producer |
| Steve Socki | Producer |
