Season Regulars 4

1. 

   Phillip Van Dyke

   Arnold (voice)

2. 

   Francesca Marie Smith

   Helga Pataki (voice)

3. 

   Jamil Walker Smith

   Gerald Johanssen (voice)

4. 

   Dan Castellaneta

   Grandpa Phil (voice)

Guest Stars 17

1. 

   Olivia Hack

   Rhonda Wellington Lloyd (voice)

2. 

   Justin Shenkarow

   Harold Berman (voice)

3. Christopher Walberg

   Stinky Peterson (voice)

4. 

   Ben Diskin

   Eugene Horowitz (voice)

5. 

   Dom Irrera

   Ernie Potts (voice)

6. 

   Tress MacNeille

   Grandma Gertie (voice)

7. Steve Viksten

   Oskar Kokoshka (voice)

8. 

   Baoan Coleman

   Mr. Hyunh (voice)

9. 

   Mary Scheer

   Suzie Kokoshka (voice)

10. 

    Kath Soucie

    Miriam Pataki (voice)

11. 

    Craig Bartlett

    Brainy (voice; uncredited)

12. 

    Nika Futterman

    Olga Pataki (voice)

13. 

    Dan Butler

    Mr. Simmons (voice)

14. 

    Anndi McAfee

    Phoebe Heyerdahl / Joy (voice)

15. 

    Maurice LaMarche

    Big Bob Pataki / Uncle Chuck (voice)

16. 

    Maria Bamford

    Mayor Dixie (voice)

17. 

    Mitzi McCall

    Pearl Simmons (voice)

Crew 5