Image via Activision You can pick from several operators to play as in Call of Duty: Black Ops Cold War and Warzone. Although they don’t have any distinct gameplay differences, they serve as a way to have a unique look when playing against other players in a multiplayer match or a Warzone battle royale game. For operator Song, there is a mission you can complete if you purchase the Season 3 battle pass to unlock new skins. If you want to finish these missions, you need to reach level 40 on the Call of Duty Season 3 battle pass track. Make sure to have the operator Song equipped to work through these objectives.