Doctor

This Doctor turns up wherever Futurama needs a straight-faced professional to deliver outlandish diagnoses with total clinical calm. He examines patients, states bizarre medical facts as routine, and moves on, treating the impossible as just another Tuesday in a future where anatomy and physics are negotiable.

The joke is entirely in the delivery: a background character rattling off absurd prognoses in the flat, unbothered cadence of an actual physician. Maurice LaMarche's gift for authoritative-sounding nonsense sells lines that would fall flat from anyone playing them as jokes rather than as Tuesday paperwork.