Iron Giant is a fiend in Final Fantasy X-2. It is not a particularly difficult foe to defeat, though it does have high Attack power. Using Power Break will help remedy this, and for taking it down, any magic or physical attack should do. When it is Oversouled it has access to all four Level 2 elemental spells. Casting Nul-spells will help with dealing with this, or if the player has access to them, using Lunar Curtain, Shell, or Reflect will help in cutting down the damage. It'll also take its rage out on White Mages, so cast Protect on them if necessary.