Koslov[1] is a minor character from the Disney animated feature film, Zootopia. He is Mr. Big's most trusted henchman, and a member of the Tundratown mafia.



In early drafts, Koslov was known as Boris Koslov.[2] As opposed to Mr. Big, Koslov was going to be the antagonist encountered in Tundratown, having a larger role as a Russian gangster and the owner of a restaurant called Koslov's Palace. He was also planned to have a son named Morris.[3]

Despite his power, Koslov was not above the law. Like all predators, he was forced to wear an electric collar as a means to keep his will under the authority of prey citizens. This tied into a pivotal point in the story involving Koslov, where Morris came of age, now eligible to be given an electric collar of his own. To Morris and the other children, this was a sign of maturity and the first step into adulthood; for Koslov, he regretted the day ever coming to pass, and such regret was validated when Morris, due to his joyous excitement, was shocked for the first time. A remorseful Koslov could only hug his son in response. The scene was meant to emphasize the cruelty predators faced in the original, dystopian draft of the story.[4]

Role in the film[]

After being captured by some of Mr. Big's henchmen, Raymond and Kevin, Nick Wilde (who Big holds a personal grudge against) and Judy Hopps are taken to the crime lord's lair. When Koslov appears, Judy believes him to be "Mr. Big", but after taking a seat at his desk, Koslov reveals Big to be an arctic shrew.

During the end credits, Koslov is seen enjoying the music of Gazelle's concert with a stoic expression, while Mr. Big and his daughter, Fru Fru, dance together in his palms.


  • On some promotional material, Koslov's name was incorrectly written as Kevin.
  • Koslov is shown to be Catholic, as he is seen crossing his chest in prayer during the film.
  • In some promotional materials, Koslov's sweater is colored blue—this is because blue was the color of his suit in the earlier versions of the story, before ultimately being changed to black.


  1. Byron Howard via Twitter
  2. Imagining Zootopia, extended scene. Documentary, 2016
  3. The Art of Zootopia, pages 16-17
  4. Imagining Zootopia. Documentary, 2016