A sprawling look at the evolution of humankind, over the course of a billion years.
| Actor | Role |
|---|---|
| MMurwarid Abdiani(voice) | (voice) |
| JJaden Alexander(voice) | (voice) |
| LLance Anderson(voice) | (voice) |
| KKarin Anger(voice) | (voice) |
| LLaura Basler(voice) | (voice) |
| KKareem Battle(voice) | (voice) |
| RRoss Beeley(voice) | (voice) |
| MMargot Bercy(voice) | (voice) |
 Wendi Bergamini(voice) | (voice) |
| WWendy Campbell(voice) | (voice) |
| EE. Simon Cavazos(voice) | (voice) |
| DDotty Chasse(voice) | (voice) |
| SStephanie Comer(voice) | (voice) |
| KKenneth J. Cook(voice) | (voice) |
| LLinda Cook(voice) | (voice) |
| SSara Cushman(voice) | (voice) |
| JJennifer Damas(voice) | (voice) |
| EEmily de Groot(voice) | (voice) |
| NNeal Fannin(voice) | (voice) |
| TTobias Geye(voice) | (voice) |
| AAdrian Goldthorp(voice) | (voice) |
 Rob Guillermo(voice) | (voice) |
| NNoah Harpster(voice) | (voice) |
| JJeff Hassay(voice) | (voice) |
 Don Hertzfeldt(voice) | (voice) |
| MMargaret Hession(voice) | (voice) |
| HHunter Hillegas(voice) | (voice) |
 Mike Judge(voice) | (voice) |
| CColleen Kehl(voice) | (voice) |
| MMelissa Kehl(voice) | (voice) |