Zac Efron is set to "sully" his clean-cut image in Seth Rogen's upcoming comedy.
The High School Musical star has been cast as a fraternity leader in the funnyman's as-yet-untitled college-themed movie, which will also be co-written by Seth and Evan Goldberg.
"He's the president of a fraternity who really does despicable things, as the president of a fraternity would do. We [Seth and Evan] were just pitching him these ideas, and he was going along with it," Seth revealed to MTV News.
"We kept looking at each other, like 'he's actually going along with this stuff', and then he would come up with things that would be pushing it further and we thought, 'Wow, people are really going to be shocked.' And so it's exciting to us."
Seth - who is known for adult-themed comedies like Pineapple Express and Superbad - reckons that Zac can't wait to shed his good-guy image.
"He was really looking to be sullied, which is why we thought it would be a good idea," Seth continued.
"I've met him a few times over the years and the first thing you get from him is that he knows that a guy like me would probably hate him, and he works directly to counteract that feeling... That's why I thought it would be really funny, that he'd be fun to work with and seemed capable of much more than the Disney stuff we've seen him in."