Avenger (weapon)

Avenger is a recurring weapon in the series. It is usually a very powerful weapon, obtained late in the game, though this is not always the case. It usually involves the Berserk status.

Final Fantasy IV
The Avenger is a sword that is first found in the Sylph Cave, and while equipped, puts the wielder in a constant Berserk state. It has an attack power of 80, accuracy of 45, gives +10 Strength, Speed, and Stamina, and -10 Intelligence and Spirit. More can be won from Behemoths and King Behemoths, though they are a very rare drop.

Final Fantasy IX
The Avenger is a high-level weapon for Amarant, which can be either bought from Bran Bal or Daguerreo for 6000 Gil, or stolen from Earth Guardian. It teaches the abilities Demi Shock and Counter, and has innate Instant Death. It boosts an attack power of 70.

Final Fantasy X
The Avenger is a weapon for Tidus that can only be gotten if the dominant ability on his weapon is either Counterattack or Evade & Counter.

Final Fantasy XII
The Avenger is oddly enough a high-level dagger that has a chance of inflicting Berserk on hit. It requires 35 LP to use, costs 6000 Gil to buy, and has an attack power of 52 and Evade of 5.