A greater skeleton is a skeleton that has been given much more power and freedom. Although often serving under a summoner, they can also be seen serving themselves and leading groups of lesser undead. They are well known by necromancers for their extra pair of limbs and their magical ability to talk, making them much more useful to them in various ways. These abilities also make them much more dangerous, possibly causing them to kill an inexperienced necromancer intentionally and to go rogue.