David X. Cohen: Roberto the robot was built... He was purposely constructed to be a murderous robot... first of all...
John DiMaggio: Yes.
David X. Cohen: And secondly they said "while we're at it let's give him a really... good sense of smell, [John DiMaggio and Lauren Tom laugh.] 'cuz that could come in handy"...
Claudia Katz: So he could smell fear.
[Tress MacNeille laughs.]
John DiMaggio: Don't ever challenge David X. Cohen to dig himself out of a hole, 'cuz he will... and then put all the dirt upon you. [sic]