| Name | Character | Episodes |
|---|---|---|
| John Cena | Robo | 8 |
| Clancy Brown | The Stranger | 8 |
| Giancarlo Esposito | Victor Goldsmith | 8 |
| Kat Dennings | Dallas | 8 |
| Stephen Root | Uncle Danny | 8 |
| Jane Lynch | Carol | 8 |
| Taran Killam | Bright Eyes | 8 |
| Tim Blake Nelson | The Woodsman | 8 |
| Milana Vayntrub | Ellie | 8 |
| Dana Snyder | Fat Paul | 8 |
| Julie Nathanson | Computer (voice) | 5 |