Aggressive

Aggressive, or Aggro refers to enemies in the game that will attack the player without any sort of provocation. Some enemies have one or multiple detection types, and provided said conditions are met will (usually) growl and go after the player. If an enemy checks as too weak to the player, aggressive monsters will not respond. Certain enemies always aggro, such as Detectors.

Sight

• A cone extending about 15' and 60° from the front of your opponent will cause aggression.
• This can be avoided with Invisible unless the opponent has True Sight. Alertness reduces your ability to be detected by sight.
• Some foes have enhanced or reduced sight in the daytime or nighttime. Both the distance and the cone size increases or decreases.
  • Foes in dungeons such as Bugbear are under the effects of night sight at all times of the day.

Night Vision
Family	Day	Night
Orc
Warmachine
Goblin/Moblin	5'/?°	10'/60°
Bugbear	N/A	10'/60°
Coeurl
Tiger
Gnole
Gnat

Day Vision
Family	Day	Night
Yagudo
Bee
Beetle
Cockatrice
Dhalmel
Greater Bird
Porxie

Sound

• A radius of 8' from the enemy will cause aggression.
  • Some true sound enemies can have up to 30' radius
• This can be avoided with Sneak unless the opponent has True Sound. Stealth reduces your ability to be detected by sound.

Bleeding

• If you are in a state of low HP (Yellow), enemies within a radius of 8' will cause aggression.
• If you are in a state of half HP (Orange), enemies within a radius of 18' will cause aggression.
• If you are in a state of critical HP (Red), enemies within a radius of 20' will cause aggression.

Healing

• If you are healing (sitting on the ground after using /heal) ,enemies within a radius of 8' will cause aggression.

Magic

• If you are casting a White, Black, Blue or Summoning magic spells, enemies within a radius between 8' and 20' will cause aggression, depending on location.
  • This does not affect Songs, Ninjutsu or casting Trust Magic.
• Arcana and Elementals are magical beings who have this sense.

Abilities

• If you use an ability or a weapon skill, enemies within a certain radius (usually 20') will cause aggression. This does not affect ranged attacks.
• This sense is rare: limited to the Flan, Murex, Poroggo, Soulflayer and Aht Urhgan's Fomor families.

Scent

• The sense of smell does not cause aggression, but instead is used to track a player that caused aggression.
• Normally, if a monster's source of aggression is too far away to sense for a long time, they will stop chasing. However, monsters who can detect smell can continue chasing you from any range once they have your scent.
  • This sense is disabled during weather effects including rain, thunder, snow, and dust storms.
    • Scent is also disabled from Deodorize (Status) or from stepping into water.

Passive Aggressive

• Some monsters, such as Pixies, Hpemdes, will aggro the player, but as long as they are not damaged will not attack the player.
  • They can be attacked, have spells cast on them and they won't engage until you do damage.
  • This can be useful for skilling up magics, such as musical skills, as they often have no damage associated with them.

Sleeping

• Some enemies in Treasures of Aht Urhgan and Abyssea areas are diurnal or nocturnal, and will therefore occasionally be sleeping. The "Zzz's" floating from their heads indicate that they will not aggro until they are awoken (either because they are attacked or because the clock changes to their "awake" time). Unlike normal Sleep, any type of aggressive action will cause them to awaken from this type of sleep, even if it does not deal any damage.

Link

• When an enemy can link, if they see or hear (based on detection) a fully engaged monster, they will join in on the attack.