Aggression refers to the game mechanics behind attracting creatures towards players or friendly NPCs. In Final Fantasy XIV, a creature's aggression varies in type and rank.
There are two types of aggression behavior in the game:
- Passive: Passive creatures will not aggro on the player or other friendly NPCs, unless that creature is attacked. It's denoted by a light blue icon.
- Aggressive: Aggressive creatures will aggro on the player or other friendly NPCs as soon as they enter a specific aggro radius. It's denoted by a yellow icon within a red triangle.
Creatures are also categorized by aggression rank. It refers to how strong a certain creature is, and range from rank 1 to 6, each with their own icon.
Aggressive creatures will likely not aggro on players 11+ levels higher.