Tidus is upbeat and carefree and at first appears childish. He turns more serious when things get hectic, and despite his carefree ways, conceals a troubled past. Tidus is sensitive and even when giving an emotional response to most of his arguments, tends to give a good rationale. Having been picked on throughout his childhood by his blitzball-playing father motivated Tidus to become a blitzball player himself.
To Tidus's dismay, he has similarities to his father who tended to deny his position, take things easy, and never worry about the present situation leaving things for the morrow, traits Tidus despised about him. Tidus's resemblance to his father is pointed out by Auron, who says Tidus is "the one running away". A lot of Tidus's personality is shaped by the comments he used to receive from his father, and how he grew up to resent him. Despite having been verbally offensive, at heart, Jecht was proud of his son and his resolve. Tidus confronts his childhood and his relationship with his father when living out his new life in Spira, and matures from a self-centered and outspoken athlete to a selfless hero.