Pizza Deliveryboy

He shows up at the very start of the story, a bored, unremarkable pizza delivery guy dropping off a frozen pie order at a cryogenics lab on New Year's Eve, 1999. He wants his tip, has no idea what he's about to set in motion, and is gone almost as soon as he appears.

He's the tiny, ordinary hinge the entire premise swings on: one indifferent transaction accidentally freezes Fry for a thousand years. Phil LaMarr plays him with total flatness, no wink to the audience, which is exactly what makes the cosmic joke land — the universe turns on someone who couldn't care less.