Quote Originally Posted by Jiro View Post
So did Dona and Isaaru have to be tracked down before Yevon would smurf off? What about Brother Zuke who was a summoner previously?
They are not the summoners of DZ. Yevon is the summoner of DZ, and the people who are glowing on Gagazet are the fayth that gives DZ form.

Contrast this with Yuna (or any other standard summoner) who can use Valefor/Bahamut, etc., of whom are the fayth in the temples. Notice even more that you can't summon two copies of the same Aeon at any time (e.g., Remiem Temple challenges or the final sequence).