What’s Up, Doc?

A tightly wound musicologist from the Iowa Conservatory in Ames, Howard is driven by a prestigious grant and a need for order. His principled, formal demeanor clashes with Judy's improvisational schemes, fueling much of the initial farce. He remains earnest and capable, learning to adapt as the night spirals into chaos.

A quick-witted, charming rogue who uses humor and knowledge to navigate social situations. She infiltrates high society and hotel life with audacity, without paying for her stay. Her warmth and spontaneity ultimately win Howard’s heart, despite initially undermining his carefully laid plans.

Howard's tightly wound fiancée, obsessed with status and propriety. Her preoccupation with appearances fuels much of the tension and miscommunication. She remains a foil to Judy's free-spiritedness, contributing to the film's escalating chaos.

A government agent pursuing top-secret papers, dogged and determined. His pursuit adds an espionage subplot to the hotel caper, heightening stakes and driving conflict between rival parties. He embodies the cunning, relentless energy of the pursuit.

A wealthy socialite with a prized jewels collection that motivates the central theft and misplacement plot. Her generosity toward the recovered items mirrors the film's playful critique of wealth and prestige. She remains a key figure whose jewels catalyze the chaos.

Carrier of one of the misdirected bags containing top-secret papers, his role weaves into the tangled web of mistaken possessions. He contributes to the film’s chaos by intersecting with other characters’ quests. His bag-crossing becomes a hinge for the plot’s reversals.