The Spy is a playable class in the Team Fortress classic series of games. His primary role is to infiltrate the enemy's base and perform activities such as killing high value targets or slipping past enemy defenses and acquiring the enemy flag. To assist him with these tasks, the Spy has the ability to disguise himself as members of any team and feign death. In order to take out high value targets, the Spy is equipped with the Knife which kills an enemy in one hit if the target is backstabbed. He can also use the Tranquilizer Gun to slow down a potential victim in order to make a backstab easier.