Police Sergeant

The Police Sergeant is exactly what the badge suggests: a background authority figure in the world of Big Mouth, popping up whenever the show's chaos spills into official trouble. He's brisk, unbothered by the absurdity around him, and treats the town's escalating nonsense with flat, procedural calm.

Jordan Peele's deadpan is the joke here — a voice built for unflappable seriousness dropped into a cartoon universe of hormone monsters and puberty panic. The contrast between his measured delivery and the show's anarchic tone is what makes even a brief authority-figure cameo land as funny rather than filler.