Aggro

, also known as "Aggression", is a game mechanic where monsters can attack players' characters (usually against the players' intention). Monsters which can attack characters are usually referred to as "Aggressive monsters".
For a PvP aggression between characters of the opposite Alignments (Bonta vs Brakmar), see Aggress.
For a PvP aggression between the members of different Alliances, see Alliance#Conquest and Sentinel Potion.
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==Mechanics==
Since the Update 2.45, almost all monsters can be aggressive but only towards characters below their level by more than 50 and can no longer attack the characters immediately but instead with a delay of 10 seconds.
The mechanic can be divided into 3 parts:
* Detection: Monsters have a field of vision of 3 cells. When a character enters this field of vision, an attack may occur. The field of vision for attack purposes is determined by the leader of a group of monsters.(Turning off the "Display all the monsters in a group" option is recommended for identifying the monster leader more easily.)
* Evaluation: All monsters in the game will be able to attack characters if the difference between the monster's level and the character's level is greater than 50 levels (e.g. a monster at level 140 will attempt to attack a character at level 80). Only the highest level monster in a group of monsters is taken into account. The aggressive group of monsters is marked with a small "red sword" symbol. As soon as a monster detects a potential target that it might choose to attack, a small "eye" symbol will appear above it to warn players that it is time to get out of there.
* Attempted attack: If the target evaluation condition is met, and if the character is within the monster's field of vision (i.e. within a few cells of it) for more than 10 seconds, then a battle will start.
The aggressive monsters are also shown in the in-game Bestiary dynamically depending on the character's level.
When a character comes to a new map they have a period of aggression invulnerability (about 60 seconds) to prevent characters from being attacked by the monsters without a chance to avoid it. The aggression invulnerability disappears immediately as soon as the character moves.
Monsters will not attack characters who are talking to the NPCs or are reading signs or interactive documents before entering the monsters' field of vision (however they still attack characters who are reading a book from their inventory).
Monsters' behavior outside of combat is also modified: monsters will slowly but persistently try to approach low level characters walking through their part of the map. It will therefore be important not to stop in one place for too long on a map that has monsters that might attack your character.
Monsters are not aggressive inside the dungeon (except for Giant Kralove since directly starting a fight against it turns out to be impossible due to the boss's map which lacks adjacent cells around the Kralove).
Some monsters are never aggressive (e.g. Fleaster Egg) unless it is in a group of monsters which has another aggressive monster. The in-game Bestiary can be consulted when in doubt.
==External Links==
Dofus.com - Update 2.45
Dofus.com - DevBlog 2.45 - Changes to the monster attack system
Dofus.com - Updates to the new Aggression system - Patch 2.45.2
Dofus.com - Aggro invulnerability upon coming to a new map (Izmar's comment)
Dofus.com - 60 seconds aggro invulnerability upon coming to a new map (Nerodos' comment)
Dofus.com - Aggro invulnerability while talking to NPCs (Nerodos' comment)
==History==
; 
Aggroes, or aggressive monsters, are monsters that will initiate combat with you if you walk or run too close to them. In other words, they will aggress you. Aggro monsters have an Aggro range.
; Avoiding Aggressive Monsters
Often you can avoid aggressive monsters by simply going around them, either in the same map or exiting the map and taking other maps. If you try to walk around them in the same map, you need to stay out of their Aggro range. This range is at least one square, and can be higher with higher-level monsters. 
An aggressive monster will not attack you if you do not move, no matter how close you are. So when you arrive on a map and find yourself surrounded by aggressive monsters, you can stay still and wait for the mob to move away, then walk around them. Or if the exit point is visible you can usually step on it without being aggressed (this works best if you are a single square away from the exit point, i.e., if you've just arrived on the map). Or if you are impatient, you can use a Recall Potion. 
A very useful way of avoiding aggro monsters is to turn the whole group into one character, by turning off Option menu -> "Performance" tab -> General heading -> Display all the monsters in a group. It is also wise to turn on "Show the grid" and "Display characters in transparent mode." The grid will allow you to see exactly how many squares away you are, and transparent mode will allow you to see any mobs hiding behind buildings or other obstructions. You may also wish to travel with your spouse, using the "Join" command. This allows you to jump to your spouse's position any time you are surrounded by an aggressive mob, rather than waiting for the mob to move away from you.
Here is a list of aggressive monsters.
; Notes
Its not just walking that triggers, but also actions such as cutting a tree, for instance if an aggressive mob walks towards you and you end up being in their aggro range, and you are standing in front of a cuttable tree, cutting the tree will cause you to get aggroed.
In fact, even using a ladder, a door or a trashcan near a mob, even if they are not aggressive, will cause you to fight that mob as if they were aggressive.
It should also be noted that their aggro range is checked against the square you move TO and not the square you move from. So, for example, say you are 1 square away from a monster with an aggro range of 1. Moving away from this monster will NOT initiate combat. This piece of knowledge is especially useful when you factor in that you can move straight Up/Down/Left/Right, resulting in you moving a total of 2 squares away from the aggro group instead of just 1.
Moving in the opposite direction of a monster group will still trigger aggression.
An aggression between two aligned characters is called an Aggression.
See also: Wikipedia:Aggro.
Category:Game information