• Gilgamesh - Head to the Jidoor Auction House and put down 500,000GP for the Excalipoor. From there, head to the Coliseum and put it up as your wager during a battle. You'll fight an Onion Soldier when you do. Defeat him and Gilgamesh is yours.
  • Leviathan - Go to South Figaro and speak to the man near the Chocobo Stables. He'll talk to you about a huge shadow he saw on the high seas will sailing. With that information, head to Nikeah and board a boat there. The ship will stop, and after a short cutscene, you can fight and subdue Leviathan
  • Giant Cactaur - Head to Miranda and talk to the person near some crates on the west side of town. He'll tell you he was attacked by a huge Cactaur in the nearby desert. Head outside of town thereafter and seek out a small patch of desert. Run around there, killing regular Cactaurs. Eventually, the Giant Cactaur will show himself. Defeat him to use his Esper power.