Warden

A warden (also known as witchmen, Hemlocks, Hexers, and by the elves as vort'hunn) is anyone who has undergone extensive training, ruthless mental and physical conditioning, and mysterious rituals (among which include the Murderous Changes and the Gauntlet) in preparation for becoming skilled monster hunters. The warden profession arises from the First Age order that came together to fight the Tainted Prince and the Spawn.

The main protagonist of the series, Erron of Centris, is one of the most famous and mutated wardens in known history.

Sungard, School of the Dawn
Trained but not mutated
 * Aeskar of Mesto