WWE is toying with the idea of turning a top Superstar heel and have them be the person behind The Nexus angle. The main people being pitched for a heel turn are Triple H and believe it or not, John Cena.
Cena turning heel would be a risk because of his popularity with kids and everything else, including merchandise. Triple H has wanted to turn heel for a few years now but with injuries to him and his co-workers, they haven’t had the right time to turn him.