Meet the Spy, one of nine playable character classes in Team Fortress 2:
Primary: Revolver
Secondary: Electro sapper
Melee: Knife
Contraptions: Disguise Kit / Cloaking Watch
He is a puzzle, wrapped in an enigma, shrouded in riddles, lovingly sprinkled with intrigue, express mailed to Mystery, Alaska, and LOOK OUT BEHIND YOU! but it is too late. You’re dead. For he is the Spy — globetrotting rogue, lady killer (metaphorically) and mankiller (for real).