What, no FFXIII-2 thread? POTENTIAL SPOILERS

It's called the Impeder's Opal from what i remember

Does anyone know where the huge boss C'eith spawns in Oerba 400AF? do i have to do anything to make it spawn?

Beach, run around in circles and it'll come in a paradox form like Don Tonberry. Turn on the battlemania skill to help a LOT.

Make sure you're prepared. It starts off easy but gets kind of crazy near the end. Not really hard just hectic.