- Billy West (Philip J. Fry / Professor Farnsworth / Zoidberg / Zapp Brannigan (voice))
- Katey Sagal (Leela (voice))
- John DiMaggio (Bender (voice))
- Tress MacNeille (Mom (voice))
- Maurice LaMarche (Morbo / Kif Kroker (voice))
- Lauren Tom (Amy Wong (voice))
- Phil LaMarr (Hermes Conrad (voice))
- David Herman (Scruffy (voice))
Futurama — S6E9
Episode: A Clockwork Origin
Air Date: 2010-08-12
Runtime: 22 min
Overview
The theory of evolution is put to the test on a planet inhabited by robots.