What is the name of the shrew crime boss in Zootopia?

The shrew crime boss in *Zootopia* is Mr. Big.

Mr. Big is an Arctic shrew who controls a criminal organization in Tundratown. His tiny size contrasts with his authority, intimidating polar-bear bodyguards, and carefully cultivated reputation. The character is a playful homage to Don Vito Corleone from *The Godfather*, including the formal manner and underworld status.

Judy Hopps and Nick Wilde meet Mr. Big while investigating the disappearance of Emmitt Otterton. His guards capture them, but Fru Fru interrupts after recognizing Judy as the rabbit who saved her in Little Rodentia. Mr. Big then helps the investigation by revealing what he knows and later intimidating Duke Weaselton.

A common mix-up is confusing Mr. Big with a large animal because of his title. The name refers to influence rather than physical size. He is also Fru Fru’s father and appears during the film’s closing concert sequence featuring Gazelle.