The Underdrome is the Underwold counterpart of the Olympus Coliseum. It is where all tournaments are fought in Kingdom Hearts II.

Once closed down and locked up by Zeus due to the senseless violence, it was reopened when Sora opened the lock during his first visit to Olympus Coliseum. The different tournaments you can enter are:

  • Pain and Panic Cup
  • Cerberus Cup
  • Titan Cup
  • Goddess of Fate Cup

There are also the Paradox Cups.

  • Paradox: Pain and Panic Cup
  • Paradox: Cerberus Cup
  • Paradox: Titan Cup
  • Paradox: Hades Cup
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