Threat, also called as aggro (shortened form of "aggression"), is a stat that represents the amount of aggression a mob has on a player. When a mob is threatened, particularly by being attacked, it will cause that mob to fight back, although in most cases mobs attack upon sight range of players and will give chase unless the player moves faster than the mob and is far away from it.

Certain classes have the ability to handle threat more than others, and these classes can take on tanking roles, provided that those classes have the ability to withstand the attacks to be received.

List of Threat-Manipulating Skills

Threat reduction skills