Roger Elliston is a young, wealthy boy who shares most of Sharpay's personality and appears in Sharpay's Fabulous Adventure, where he and Sharpay compete each other to win a role for their dogs. He continuously attempts to win the role for his dog, Countess, by cheating. Eventually, he and Sharpay are forced to come together to reveal Amber Lee Adams' true image to the world.

Roger is portrayed by Bradley Steven Perry.