Silas Mann

Silas Mann, the alive form of HHH, is a neutral enemy that appears in Mann Manor, the Carnival of Carnage, and the community Payload map Hellstone. In Mann Manor, approximately every 8 minutes, he spawns at the currently contested control point and hunts down players from both teams. He has a great deal of health, deals devastating damage in a single attack, and will continue to rampage until defeated by the players. In the Carnival of Carnage, he spawns in the bumper car games (except Duck Collector) after a certain amount of time, carrying the Necro Smasher instead of his normal weapon. OnHellstone, he spawns when the BLU Team captures the second point.

The Horseless Headless Horsemann is referred to as "Team Fortress's first boss monster" on the official Scream Fortress Updatepage.