Robert Pattinson may need to have a little chat with Jack Huston.

Eclipse's superhot newbie isn't anticipating having to face screaming fanggirls clawing, pushing, shoving and biting for his attention.

The actor plays Royce King II, the good-on-paper fiancé to Nikki Reed's Rosalie Cullen, in a flashback sequence.

"I don't think I will [face the madness] because of my part," he told E! News at the G-Star Raw fashion show. "I'm actually kind of a nasty guy. I'm her fiancé who ends up basically trying to rape her. It's rather horrible."

There's a chance we may never have met Royce and the small but meaty part may not have even existed were it not for David Slade taking a meeting with Huston.

"I went in to the director and he very sweetly wrote this part up for me," the actor admits. "It was kind of a nice compliment from him."