Ancient warriors are melee based enemies which are found in the Ancient Prison in the God Wars Dungeon. Occassionally when fighting an Ancient warrior, they will, without warning, perform their special attack. This special attack appears as little black clouds of dust on the ground, closing in on the player in the shape of an 'X' until converging at the place where the player had been standing. If the player doesn't quickly move at least two squares away, they will be hit for heavy damage (commonly over 300 lifepoints of damage). Killing Ancient warriors count towards the required kill-count to enter Nex's chamber.
Wearing high melee defence armour (exactly how high the defence bonus has to be is unknown) will render the warrior unagressive.