Stała obsada sezonu 3

1. 

   Debi Derryberry

   Jimmy Neutron (voice)

2. 

   Jeffrey Garcia

   Sheen Estevez (voice)

3. 

   Rob Paulsen

   Carl Wheezer (voice)

Goście specjalni 7

1. 

   Billy West

   Corky Shimatzu / Larry Llama (voice)

2. 

   Frank Welker

   Goddard / Tubbs / Special Vocal Effects (voice)

3. 

   Carolyn Lawrence

   Cindy Vortex / Yuri (voice)

4. 

   Phil LaMarr

   Bolbi / Pitz / Teenager (voice)

5. 

   Jim Cummings

   Mayor / Dog (voice)

6. 

   Rob Paulsen

   Butch / Principal Willoughby (voice)

7. 

   Debi Derryberry

   Little Kid / Mother (voice)

Ekipa 2