Doc Fiesta

Doc Fiesta appears as one of the many oddball background figures who populate Futurama's twisted future New New York, the kind of character who pops up for a scene or two with a distinct voice and a strange profession, adding to the show's dense, joke-packed universe without ever taking center stage.

Billy West's gift for inventing a fully formed voice out of almost nothing is what makes even a minor figure like this memorable. Futurama thrives on these quick, odd flourishes, and West's vocal specificity gives Doc Fiesta a personality in seconds rather than episodes.