I went back and Oversouled Omega Weapon again. Worked like a charm.

Paragon's such a pushover in Oversoul too! He just sat there while I prepared with Chocobo Wings and Curtains. Trema was tough, but the gamefaqs.com strategies worked perfectly. The only character that died at all was Yuna, and that was because of the Cat Nip.

Iron Duke is nifty as is The End Garment Grid. I take it Finale instantly kills any enemy?