Koslov is a minor antagonist turned-one of the minor protagonists from Zootopia. He is one of Mr. Big's bodyguards.
He also appears in a couple of Zootopia books called The Art of Zootopia and The Official Zootopia Handbook.
He also has a son named Morris but Morris was a deleted character.
Koslov is silent and seems to have a stoic personality.
Koslov is a tall white polar bear with a navy blue mafia esque suit, a golden chain, black nose, eye brows and sweater and blue eyes.