Oblitzerator

The Oblitzerator is a boss in Final Fantasy X. It is a machina weapon commandered by the Al Bhed and is fought by Tidus, Lulu and Kimahri on a ship leaving from Luca Dock No. 4 after Yuna is kidnapped by the Al Bhed Psyches.

There is a one-in-three chance that Oblitzerator will counter with a barrage of Blitzballs. For physical attacks, the counter causes Darkness; for magic they cause Silence. Tidus should cast Cheer for his and Kimahri's strength, and use Haste on Lulu so she can unleash many Thunder spells.

With 6000 HP, Oblitzerator is a difficult battle, however a cheap option is available. Lulu will notice a crane which needs to be hit with Thunder three times before Tidus can use the Trigger Command to activate it and remove Oblitzerator's top half, lowering his HP to 1/16th (a maximum of 375). The fight wont last much longer after that.