Best at: Prime Target Assassination
Secondary: Invis Watch / Disguise kit
Base Health: 125
Turns invisible and disguises a lot
A dashing rogue with the ability to disguise as his enemies and turn invisible, the Spy is the sneaky saboteur of the team.
Using his Disguise Kit and Invisibility Watch, the Spy can sneak behind enemy lines. He also comes with a Sapper, used to shut down and slowly destroy enemy Engineer buildings. Spies cannot attack while invisible and attacking while disguised will remove his cunning disguise. You can place sappers while disguised though.
An alternative to invisibility on demand is the Dead Ringer, which drops a fake body and turns the Spy invisible when he's damaged. This is supposed to fool enemies, but it doesn't always work.
The Spy's worst enemy is the Pyro.