Poltergeist is the fanlisting for Tidus from Final Fantasy X. It is listed under Game Characters in the Games category at The Fanlistings Network.
A fanlisting is a site that exists to list fans of a particular subject. Any fan is welcome to join; you do not have to have a website. All that is required is a name, an e-mail address (which you can opt to hide), and your country of residence. If you are a fan of this great character, join!