I have just spent about 45 minutes trying to beat this boss in FFX-2 only to be annihilated. It's the big weapon in Bikanel Desert in Chapter 5. This thing has ridiculous amounts of HP (333,800 about). Bastardly piece of crap.
As of today I have seen the Return of the King three times, yay!
(spoilerage if you haven't seen it!)
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Favorite RotK Quotes )