Series Cast 12

1. 

   Greg Eagles

   Grim (voice) (24 Episodes)

2. 

   Richard Steven Horvitz

   Billy (voice) (24 Episodes)

3. 

   Grey DeLisle

   Mandy (voice) (24 Episodes)

4. 

   Vanessa Marshall

   Irwin (voice) (24 Episodes)

5. 

   Maxwell Atoms

   Jeff the Spider (voice) (3 Episodes)

6. 

   C.H. Greenblatt

   Fred Fredburger (voice) (2 Episodes)

7. 

   Phil LaMarr

   Judge Roy Spleen (voice) (1 Episode)

8. 

   Frank Welker

   Scooby-Doo (voice) (1 Episode)

9. 

   James Arnold Taylor

   Fred Flintstone (1 Episode)

10. 

    Rachael MacFarlane

    Eris (1 Episode)

11. 

    Nika Futterman

    Pandora (1 Episode)

12. 

    Armin Shimerman

    General Skarr (1 Episode)

Series Crew 5