So, we know that many of the heroes just gain their ultimate weapons when going into EX mode. In fact, Cecil also gets my award for ultimate badass since he doesn't even appear to use his most proficient weapon unless in EX mode.

Cecil: Nah, most of you are not worth using my sword on, I'll just beat you with my girlfriends staff and my best friends spear I "borrowed"!

What are your guesses for weapons used by the earlier characters in EX mode?

My Theory:

Firion - Bloodsword
Bartz - Brave Sword or Ragnarok
Cecil - Deathbringer or Dark Sword (DK) Ragnarok or Mythgraven Blade (PLD)
Warrior of Light - Excalibur