The Hunters (Highlander)

The Hunters are a cult-like band of renegade Watchers formed by their leader and fellow former Watcher named James Horton, and an antagonistic organization in the episode "The Hunters" of  Highlander: The Series. The Hunters broke the principles of the Watcher Society and began taking heads of Immortals on their own due to these fanatical mortals' beliefs that all immortals are abominations and they must be destroyed.

The Hunters believe that all Immortals are evil and "an abomination in the eyes of God." Consequently, the Hunters use the Watcher Chronicles to hunt and kill any and all Immortals they can isolate

The Hunters mimic the Watcher Society, albeit on a smaller scale. One Hunter is usually the ringleader in an immortal hunt, with several others providing backup.

With Horton dead, the Hunter group is all but non-existant. However, the occasional follow-up group has been known to pop up, usually lead by one of Horton's associates.