- "Only one... who renounces everything... possesses the strength... to transcend anything. Lady Yuna, you are the paragon of pastlessness!"
- —Trema to Yuna
In the English version of the game Trema is voiced by David Rasner. Rasner also voices Brother.
In the two years after Sin's defeat, Trema, a former denizen of Yevon, wished to learn more about Spira's history, hidden all over the world in the form of spheres. He created sphere hunting, which soon became a popular craze among young people, and began searching Spira for lost spheres. Trema founded New Yevon to bring stability back to Bevelle and those people who had fallen out of touch.
After some time Trema decided Spira should not be looking to the past, but to the future, and stole the discovered spheres and descended into the depths of Via Infinito deep below the city where he destroyed them. He never resurfaced, and New Yevon elected a chairman who continued the good work Trema had begun, unaware their founder was still in the Via Infinito where he had turned into an unsent and a powerful fiend.
The Gullwings venture into the Via Infinito and upon reaching the final cloister, find Trema waiting.
- Main article: Trema (Boss)
Trema is the most difficult boss in Final Fantasy X-2. He is fought in the depths of the cloisters in Via Infinito. He is regarded as the game's superboss.
- Some people speculate Trema was seen in Final Fantasy X, asking Yuna if he could look into her eyes and "show him the long road she has traveled", thus letting Yuna and her guardians enter the Zanarkand Dome. The same man is also shown after completing the Cloister of Trials in Zanarkand, and gives the group a history lesson about the Final Summoning, telling them to go to Lady Yunalesca for the Final Aeon, instead of relying on what they thought would be a Final Aeon already waiting for them.
- Although it is never heard during the game, Trema recites lyrics from the "Hymn of the Fayth" before casting Meteor. This is pretty much your only warning to when it's coming, so you can try to prepare for it.