| Name | Character | Episodes |
|---|---|---|
| Eric Bauza | Scoops (voice) | 9 |
| Kimmy Robertson | Ollie (voice) | 9 |
| Rich Evans | Merle (voice) | 5 |
| Mike Stoklasa | Brunk (voice) | 5 |
| Grey DeLisle | Julia Goldburger (voice) | 3 |
| Whitney Avalon | Sung by (singing voice) | 3 |
| Vivienne Medrano | Poopsie St. Pierre (voice) | 3 |
| Adam McArthur | Rudy (voice) | 3 |
| Candi Milo | Cuddles (voice) | 2 |
| Brock Baker | Dan Dipple (voice) | 2 |
| Daron Nefcy | Macaroni and Cheese (voice) | 2 |
| Dana Snyder | Dougie | 1 |
| James Urbaniak | Dr. Toodles (voice) | 1 |
| Candi Milo | Miss Bivvins (voice) | 1 |
| Brock Baker | Commercial Announcer (voice) | 1 |
| Brock Baker | Julia's Singers (voice) | 1 |
| Craig McCracken | Narrator (voice) | 1 |
| Vivienne Medrano | Julia's Singers (voice) | 1 |
| Rich Evans | Snack Vendor (voice) | 1 |
| Rich Evans | Brother Puddles / Misc. Cat | 1 |
| J.D. Ryznar | Brother Whiskers | 1 |
| Mike Stoklasa | Terry Bumble | 1 |
| Emily Brundige | Stacy (voice) | 1 |
| Piotr Michael | Principal Liquids (voice) | 1 |