So...the answer is activated by something else that you get later on?
The only thing I can think of is Alexander.
I'm here for a while but I'm not really used - The jewels that activate him are in the whole game, but are items that you can never actually use. Also, the activation of Alexander is between Garnet and Eiko.
I'm the best or the worst, depends on your perception - Well, some people think he's awesome, some people don't. The latter are wrong
I'm used through the entire game but in a different form - Hm. Break down here. I guess...Alexander is an eidolon, and eidolons in general are used throughout the whole game, but with different forms.
without me you lose - Bahamut would destroy Alexandria, had Alexander not appeared.
I already know this is wrong, I'm hoping it get's me some clues from eiko guy though![]()