The polar bear henchman of Mr. Big in Zootopia is named Koslov. He is Mr. Big’s bodyguard and most trusted henchman, and his imposing size contrasts with Mr. Big, a tiny Arctic shrew.
Koslov appears with Mr. Big’s group of polar-bear enforcers in Tundratown. When Judy Hopps and Nick Wilde are taken to Mr. Big after investigating a limousine, Koslov helps create the intimidating atmosphere surrounding the crime boss. Later, during the credits, he is shown holding Mr. Big and Fru Fru in his paws while they watch Gazelle’s concert.
Koslov is easy to confuse with Kevin or Raymond, two other polar bears associated with Mr. Big’s organization. Those characters also serve as henchmen, but Koslov is the especially large bear who functions as Mr. Big’s personal bodyguard and transportation. Later Zootopia material expands their history by depicting Koslov and Mr. Big as longtime friends.