Сецуна Ф. Сейей

He has got a vendetta to settle and his past battle experiences stir up old bitter feelings, increasing his combat potential as a beneficial side effect. Though a self-proclaimed atheist, he often questions the motivations of God with people and worldly events.

Having been saved by a Gundam when he was about to be killed as a child, he came to view the Gundams as the manifestation of the idea of salvation itself. He idolizes the Gundams so much that he wants to embody the Gundam himself, a means to eradicate all conflict. Ever since being saved and recruited into Celestial Being, he has devoted his being to realizing the organization's ideals and would not hesitate to fulfill them. However, Setsuna notes the irony of him being someone who is good at nothing but dishing out violence, despite his earnest yearning for peace nonetheless.

Setsuna's codename could denote the contradiction of his ends and means, as it's translated as "Moment From the Holy Eternity".

He is part of the Kurdish people and the first Gundam protagonist of Middle Eastern descent. His real name is based off Soran Ebrahim, a Kurdish child actor who protrayed the protagonist of the film "Turtles Can Fly".

Due to the power of 00 Gundam's concentrated GN particles with Trans-Am Raiser, Setsuna's brain has been gradually enhanced to utilize quantum brainwaves. He's able to sense quantum brainwaves (QBWs) near him and track users of QBWs. Eventually, he naturally evolves into humanity's first true/genuine Innovator.

At the end of the movie, after Setsuna joined the ELS, his body is not entirely human. The ELS reformed his body based on their bio-technology, forever retaining his youthful appearance with a metallic shine. It can be inferred that Setsuna became a hybrid of an Innovator and an ELS.