 His relationship with his father was based on "stories throughout the ages, such as the ancient Greek legends" and would reveal the key to the weakness of Sin, the game's main antagonist.Kitase noted that, in contrast to previous orphan characters seen in the franchise, Tidus' character arc included accepting Jecht's seeking redemption for Tidus' child abuse.Kitase felt that the voice acting and facial expression were crucial to Tidus at this stage.