Aggro

Aggro is a game mechanic that helps control what AI enemies choose to attack. Basically, the more damage a player or AI does to an enemy or its friends, the more that enemy will want to attack that player.

Aggro can be reset when the enemy is respawned due to being out of range, or if the enemy is Colorized. Roaming enemies also drop aggro when they are too far away from their protected area, and Minions drop aggro when they're too far from the player.