Non-playable characters (aka bots) have never featured in a Team Fortress game, until now. A free Halloween-themed update for TF2 has gone live today, adding an NPC boss character.
It's called the Headless Horsemann, and he haunts the rooms and halls of a new Attack/Defend map called Mann Manor. It's also littered with exploding pumpkins, so watch out for those too.
The update also opens up the Halloween section of the Mann Co Store, adds new community items from 10 new contributors, new achievements "and more".