User blog comment:Darkcloud1111/Official "The Sea of Monsters (movie)" Discussion/@comment-5268513-20130728040140/@comment-5268513-20130731002957

They are probably resurrecting him to have a real villain for the film. Luke was the main villain in the first and Polyphemus doesn't seem to be the type to be the main villain. He's most likely to be destroyed before he can be fully revived.