Horseless Headless Horsemann

Silas Mann, or the Horseless Headless Horseman, is a villain in Team Fortress 2, introduced in 2010's Halloween Mode as the chaotic boss of Mann Manor.

Presumably Zepheniah Mann's brother, Silas was the co-owner of what later became Mann Co until he passed away from some unexplained event. He then continued to haunt the lands of Mann Manor as a towering skeleton with horsemen clothing, a wickedly grinning jack-o-lantern for a head, and a comically large axe.

Every eight minutes, the Horseless Headless Horsemann will spawn on a contested control point in the map of Mann Manor, and will attack every player on the map by killing them with one swift, decapitating axe swing. The Horseless Headless Horsemann will continue its rampage until enough ammo is pumped into it, killing it.

The Horseman is commonly used as a boss in the customary fan-made Versus Saxton Hale mode.