Final Fantasy X/Aeons/Ixion

Location Found: Djose Temple

Unique Attack

 * Aerospark:
 * Non-elemental damage
 * Negates magical effects: Protect, Shell, Reflect, Haste, Regen, NulBlaze, NulShock, NulTide, NulFrost

Overdrive

 * Thor's Hammer:
 * "Ixion envelops all enemies in a storming vortex, and then disintegrates it. Lightning-based elemental damage is inflicted against all enemies. Ixion can inflict more than 9999 HP damage once you've activated Kimahri's Spirit Lance." -Final Fantasy X Official Strategy Guide