Death knight is the name of a class shared by several organizations of powerful necromancers. These orders share a few things in common, including riding horses with horned skulls for heads and many of the same abilities. The death knights of the Second War were powerful undead necromancers created by Gul'dan to replace the warlocks slaughtered by Orgrim Doomhammer. The first and most prominent of the death knights was Teron Gorefiend. In World of Warcraft, the death knight is the first of the hero classes, see Death Knight (hero class).