Cashier

A convenience-store clerk who turns up for a beat or two in one of the show's tangents, ringing up whatever mortifying purchase a Bridgeton kid is trying to sneak past an adult. He's unbothered, unhelpful, and treats the whole transaction as beneath comment.

Nick Kroll's gift for deadpan background voices means even a nothing role like this lands a joke through sheer vocal specificity — flat, faintly annoyed, gone in seconds. It's the kind of blink-and-miss bit part that rewards rewatching Big Mouth's crowded margins.