| Name | Character | Episodes |
|---|---|---|
| Jenny Slate | Miss Nanny (voice) | 141 |
| Dee Bradley Baker | Animal (voice) | 141 |
| Eric Bauza | Fozzie / Bunsen / Statler (voice) | 141 |
| Jessica DiCicco | Summer (voice) | 141 |
| Ben Diskin | Gonzo / Rizzo (voice) | 141 |
| Cree Summer | Skeeter (voice) | 7 |
| Ogie Banks | Scooter (voice) | 7 |
| Dulé Hill | Mr. Manny (voice) | 5 |
| Ashley Rae Spillers | Jill (voice) | 5 |
| Todrick Hall | Carlos (voice) | 3 |
| Rachel Bloom | Dot the Dragon (voice) | 2 |
| Jess Harnell | Singer (voice) | 1 |
| Bill Barretta | Dr. Teeth (voice) | 1 |
| John DeLuca | Vinny (voice) | 1 |