Japanese Name: Tiida
Class: Warrior, Time Mage
From the game's pamphlet:
Tidus is a cheerful rising blitzball star playing for the Zanarkand Abes. He has long hated his father, who was a renowned player himself before his untimely death. Tidus' quick moves allow him to attack even the swiftest foes with ease.
Tidus is the first character we meet in Final Fantasy X. At only seventeen, he's already a star in his city, Zanarkand; he's the Ace for the Zanarkand Abes, a Blitzball team. Everybody idolizes him in Zanarkand, and Tidus loves everyone for it.
Tidus is very much a people-person, mainly because he hates being alone. It's when he's alone that his insecurities arise. When he's alone he is haunted by his childhood, and his father, Jecht.
Tidus' world completely changes when a monster called Sin destroys the world he knows. Auron, Tidus' father-figure and a guardian who was really good friends with Tidus' father, hands Tidus Jecht's sword to fight with. They fight off Sinspawns, and then Auron picks Tidus up by his shirt, says to him, "This is it. This is your story. It all begins here," and throws him into Sin's portal.
Tidus wakes up one thousand years in the future in a world nothing like his own.