A maester of Yevon and leader of the Guado. He seems disinclined to summon aeons, but his powers are great. He can draw upon magic of all four elements as well as upon healing spells. His Overdrive Requiem deals a devastating blow to all enemies.
Seymour Guado is a summoner and Maester in the temple of Yevon. He is also the son of Lord Jyscal Guado and a human.
When did Spiritus call Seymour to World B? The most likely scenario is after Yuna sends him inside Sin. At this point, he would be extremely powerful, and useful to fight Materia’s Warriors at Spiritus’ command.