Is Jecht A Dream?? (COMPLETE SPOILER)

[Mirage]

Jecht could get to Spira because "Dream Zanarkand" is an actual physical location somewhere in Spira. The city isn't really a dream, but a huge Aeon, all the inhabitants are also technically Aeons with their own wills. So Jecht, Tidus, etc were all physical beings in the real world, that's why it's possible for them to get from Dream Zanarkand to Spira.

As for what happened after the game ended and Tidus jumped off the ship, idunno :p.

Mmm... Just a quick question. If Tidus is basically an Aeon, why didn't Yu Yevon possess him during the final battle? I've actually been thinking about this ever since I finished playing X. Either Yu Yevon just didn't know, or Tidus isn't really classified as an Aeon.

That's a good question. He might be a bit different than regular aeons, because after all, he isn't summoned through a human summoner. But that's just guesswork.

I don't think this invalidates the theory about Zanarkand and its residents being summoned by the fayth though.