Koslov is a minor character featured in the Zootopia movie. He is a male polar bear. He is a henchman and closest friend of Mr. Big, as well as a member of the Tundratown mafia. He is the biggest polar bear in the vicinity of Mr. Big, making him a big and rather frightening animal. Koslov picks Mr. Big up and carries him into his office, setting him down on his desk so the shrew can speak with Nick Wilde and Judy Hopps. At the film's conclusion, he is later spotted at Gazelle's concert. He bobs his head to the music, expressionless, holding Mr. Big and Fru Fru in his hands.