In addition to being able to swiftly assassinate key enemies, the Spy possesses the ability to disable and destroy Engineer-constructed buildings with his Sapper. Once attached to an enemy building, the Sapper disables and slowly drains health from the building. However, a Sapper can be removed by an Engineer, or Pyro wielding the Homewrecker, Maul, or Neon Annihilator.
The Spy is able to enter an enemy teleporter and can use this to make his way to the enemy team, and blend in amongst them.Whereas most players can only see the names and health of their teammates, the Spy can observe the names and health of the enemy team as well, allowing him to relay useful intelligence. This ability is unique to only the Spy and a Medic carrying the Solemn Vow.
- The Spy is voiced by Dennis Bateman.