Kraken is a boss in Final Fantasy IX. It is first seen as Water Guardian when Dagger and Eiko fight it to release the Water Seal. It appears again when it attacks the party deep in Memoria, while they are climbing the staircase that leads out the water. A crystal form of this boss appears further into Crystal World.
The Kraken has two tentacles. The right one will use Water-gun and will cast Trouble on the party. Kraken likes to use Water on the party so Reflect is inadvisable, since Kraken absorbs Water. Similarly, one should not have Return Magic equipped if Vivi or Amarant are in the party, unless Vivi also has Mag Elem Null equipped.
Later in the battle, it will cast Waterga which hits all four party members. Most attacks will be countered with Ink or Water-gun, and Kraken may also inflict the Freeze status so Body Temp is advised. It can cast Water-elemental attacks on itself to recover HP. Kraken is weak against Lightning, so Thundaga and Ramuh will make quick work of it.
Unlike the boss, the crystal Kraken does not have separate tentacle components and acts as one entity. Thus, it cannot use its Leg attack but instead has a dangerous Trouble Counter counterattack which should be remedied with a Annoyntment. Otherwise, a blitz of physical attacks and Thunder-elemental abilities are advised to bring it down.