Originally Posted by 
Omni-Odin
				 
			So here's the deal.  After going all the way through Lightning Returns, I am absolutely getting my arse kicked by the final boss.  I wan't able to beat aeronite or Ereshkigal and the Earth Eater Last One can suck it.  I figured, "Hey, those are optional bosses.  I'll do another play through after I beat the inevitably easier final boss to get better gear and stats.  Oh crap, I can't do a lick of damage."
So, maybe I'm just getting older, and can't adapt to this (difficult to me) battle system, but I find this to be the hardest final boss in a Final Fantasy I've ever walked into as close to fully garbed as possible.  (No Ultimatum garb or Falcon Charm)  So, here's my question.  Which of these games that I consider to be main series had the hardest final boss for you.