Mixmaster Fetus

Mixmaster Fetus turns up as one of the countless throwaway oddities packed into Futurama's background, a strange little name glimpsed rather than explored. He exists mostly at the edges of a scene, part of the show's endless gag-a-minute universe of aliens, robots, and absurd office drones rather than a character built for a storyline of his own.

The joke is in the name and the delivery: Billy West, the show's vocal Swiss Army knife, can drop a voice like this into a single line and make it land. It's the kind of blink-and-you-miss-it invention that rewards rewatching, proof of how densely Futurama stuffs its world with tiny, disposable delights.