Seymour believes, as many do, that Sin is eternal and sees death as a release from the sorrow of life, a mindset that gains him respect from the majority of Spira with only Tidus and Auron showing distrust and dislike for him in their first meeting. Seymour appears courteous and affable, and is popular among Yevonites.

Due to his harsh and lonely upbringing, Seymour has nihilistic views on life. When called upon he drops the pretenses and reveals his true nature as an arrogant and cruel man. He has feelings for summoner Yuna, whom he proposes to, but much of this attraction is due to a desire to gain her powers, so he can become the next Sin.

Seymour does not hesitate to kill anyone who stands in the way of his objectives, rationalizing that by murdering them, he has saved them from the pain of life.

Though he is undoubtedly evil-natured, much of his malice stems from the trauma he suffered in his childhood. The Guado considered his birth a heresy and he had to witness his mother turn into a fayth.

Voice Reference: https://www.youtube.com/watch?v=jCJhEO7lOrg
We are not looking for copycat voice-actors and fully invite you to show us your creativity. This is merely a reference showing the original portrayal of this character. Please read through the personality and use your creative talents to your liking.