Auron

A wanderer who was Braska's guardian. Also charged with taking care of Tidus as requested by Jecht.

His sword, though called a katana, actually appears to more closely resemble a nodachi or even the fictional Zanbatou. On his right hip, he carries a jug with the word "Nog" written on it (in Spiran script), a term used to describe a number of beverages including rum. The drink is featured in two of his overdrives: the contents being spat onto his sword prior to executing Banishing Blade, or used to ignite the Tornado attack; the former likely pays homage to Japanese samurai, who would occasionally spit sake on their blades in order to "feed the spirit of the blade."

Final Fantasy X
As a young man of twenty-five years, Auron was a devoted warrior monk of Bevelle, well-regarded by Yevon's upper echelons, and being groomed for a high-ranking position within the clergy. His personal convictions ultimately put a stop to any career ambitions he might have had when he refused to marry the daughter of a high priest. Auron fell quickly out of favor with the top brass, and the promotion instead went to his friend Wen Kinoc, who would eventually become a maester of Yevon.

Shortly afterward, Auron was enlisted by Braska to serve as a guardian on Braska's upcoming pilgrimage to fight Sin. It is likely the two men found common ground over being outcasts of Yevon, as Braska had already disgraced himself in the eyes of the church by marrying a "heathen" Al Bhed woman and having a half-Al Bhed child (Yuna). Auron further found himself drawn to Braska due to his noble character and honest intentions to vanquish Sin for the sake of Spira's people, developing a fierce devotion to Braska and his cause, consistently addressing him with honor, and defending him to any detractors.

Prior to departing for the pilgrimage, Auron and Braska pay a visit to a holding cell in Bevelle, where Jecht (Tidus's father) is being held, having heard that a man claiming to be from Zanarkand was interred within. The other monks appear to have dismissed Jecht's proclamations of hailing from Zanarkand as the ramblings of a drunkard, but Braska takes him seriously, telling Jecht that if he joins the pilgrimage, Braska should be able to find him a way home. Auron protests, declaring that a drunkard such as Jecht is unfit for guardianship, but Braska insists that the three of them defy the low expectations the Yevon church has of all of them, saying that it would be "delightful irony" if they should be the ones to defeat Sin. Auron relents, and the three set out on their journey to save the world.

Auron's role throughout the pilgrimage is that of a straightforward man, contrasting sharply with the patient Braska and the laid-back Jecht. His mind is always on his duty, insisting that the trip "is no pleasure cruise" when Jecht attempts to record a travelogue to one day show to his family, and he constantly reprimands Jecht for his reckless behavior, which often follows as a result of him being drunk.Over the course of the pilgrimage, however, Auron grows to trust Jecht in spite of his perceived flaws.

After finally arriving at the ruins of Zanarkand, the three men are debriefed by Lady Yunalesca, the ancient unsent summoner from whom all summoners must obtain the Final Aeon to defeat Sin. For the first time, however, they learn of the "catch" involved: one of the guardians must be sacrificed to produce the Final Aeon. Jecht volunteers, saying that he has accepted he will never be able to go home, but asks Auron to promise that he will find a way to his own Zanarkand so that he might look after Tidus in Jecht's stead. Auron agrees to this promise, and it becomes evident at this point that Auron now considers Jecht as much of a friend as Braska; Auron earlier made a similar promise to Braska: that he would take Yuna to Besaid once Sin had been banished.

Both Jecht and Braska are then sacrificed to defeat Sin, after which Auron learns the truth of Sin's nature: it is eternal, reborn from each Final Aeon, and no summoner can hope to banish it permanently. Thus, realizing Jecht and Braska to have died in vain, and that Jecht's soul has subsequently become trapped within Sin, Auron's youthful religious idealism—the very foundation upon which he has built his life—is shattered. Enraged, he takes up his blade against Yunalesca, who casually strikes him down, leaving him one-eyed and mortally wounded.

Clinging to life by little other than devotion to his lost comrades, Auron literally drags himself down Mount Gagazet to the Calm Lands, where's he discovered by Rin, who takes him to his travel agency for the evening. During the night, however, Auron leaves, despite his wounds, continuing his way to Bevelle.[5][6] Just outside the capital city of the Church of Yevon, Auron's strength abandons him and he's discovered by a young Kimahri Ronso. He convinces Kimahri to fulfill his promise to Braska for him, by finding Yuna in Bevelle and taking her to Besaid. He then dies, beginning a new sort of "life" as an unsent. Because he is no longer a living human, but composed of pyreflies, he is able to ride Sin and travel to Jecht's Zanarkand.

From this day forward, Auron is filled with enmity for the Church of Yevon, and for himself, loathing the title of "legendary guardian" that the people have bestowed upon him. He is consumed with self-reproach for his self-perceived failure of Jecht and Braska, as he didn't stop them from sacrificing themselves, despite being unaware at the time of how needless their noble actions would prove. Auron spends the next decade keeping an eye on Tidus in Dream Zanarkand, though he does not directly raise Tidus after the death of his mother, watching over him from afar instead, serving as a mentor of sorts.

Eventually, Jecht exerts some measure of control from within Sin and approaches Dream Zanarkand, communicating to Auron that he wants Tidus taken to the Spiran mainland, so that—in that harsher land of uneasy choices—he may have a shot at understanding what life's really all about, as well as stand a chance at defeating Sin for good. Thus, Auron and Tidus make a journey—with Sin as their transportation—to the Spiran mainland, where they will serve as guardians to Braska's daughter, Yuna, on yet another pilgrimage. During this journey, Auron is the seasoned veteran of the group, albeit the one who knows far more than he reveals. He refrains from telling the others the truth about Yevon, knowing they will have to discover it for themselves. No longer an uptight monk, he takes a deeply cynical stance toward the religion and its figureheads. Auron also plays the role of a storyteller, offering Tidus relevant bits of information about his father, Spira, and Yuna's father at key points throughout the game, and it is through Auron that Tidus is finally able to come to terms with his hatred of his father before their reunion.

His experience and expertise is also something that is remarked upon by many followers of Yevon, and old friends alike. He is addressed with deference by virtually everyone in Spira as "Sir Auron," due to his status as the surviving guardian of a high summoner. Barthello, the guardian and lover of Yuna's rival, Dona, even tells Auron that he was his inspiration to become a guardian.

At the game's finale, Yuna sends her aeons and Yu Yevon, but Auron, standing nearby, is inadvertently caught in the ritual. She hesitates to continue, but the guardian tells her it's alright, having previously told Tidus that he planned to leave when things were settled, that he had "played at life for too long." He is sent to the Farplane to rest at last, his mission to free Spira from its cycle of lies and death complete, and his promises to his departed friends fulfilled.

Final Fantasy X-2
Auron makes a voice appearance in the final part of Final Fantasy X-2 along with Braska and Jecht, giving Yuna encouraging words and advice in the final battle against Shuyin and Vegnagun. The only visual appearances that Auron makes are during a brief flashback in Chapter 5 when Maechen's memories flare outside Zanarkand, and a short scene with Gippal in the key item Gippal's Sphere, which is set during the events of Final Fantasy X.

Kingdom Hearts 2
A young Auron is encountered fighting in the Hades Cup.