I think Tidus was a great character. It was rough for him being transported 1000 years into the future, where all signs of familiarity were swept away. He was a bit cranky in the beginning, but partially because the only people he had met so far were Rikku and her strange language-speaking family (the Al Bhed), whom weren't all that welcoming to him. I loved how his character developed during the game, and how falling for Yuna changed how he felt about going home. It really showed how one person can change your whole life.