Switching characters in Suicide Squad: Kill The Justice League may be a bit confusing, as the game does not highlight too well how to do so. In the new title developed by Rocksteady Studios, you will control members of the Suicide Squad, which include Harley Quinn, Captain Boomerang, Deadshot, and King Shark. Each of these four villainous protagonists has a unique set of skills and, depending on the occasion, it is best to use one instead of the other.
https://screenrant.com/suicide-squad-game-switch-characters-command-pc-console/