Mike and Sulley enter the Oozma Kappa houseMike and Sulley enter the Oozma Kappa house

The new worldwide trailer for Disney/Pixar's Monsters University introduces Helen Mirren's character Dean Hardscrabble whilst also featuring Steve Buscemi, John Krasinski, Alfred Molini and, of course, Billy Crystal and John Goodman as Mike and Sulley. The latest clip focuses on the duo as they study to become "scarers. The movie opens in the U.S. on June 21, 2013 and a few weeks later on July 12 in the UK.

The trailer opens with students extolling the virtues of Monsters University, "Imagine a university where I can unique...and learn what I love," says one wide-eyed student. It's quickly established that the institution's main job is to teach young monsters how to become scary. "I'm gonna scare circles around you this year," Mike tells his roommate Sulley, "You're not even in the same league as me," comes the confident reply, "You don't have to study scaring, you just do it!"

Check out the Monsters University trailer below!

The dean of the university, Mrs Hardscrabble (played by Helen Mirren) is a pretty terrifying looking dragon type creature who poses a scaring competition, "If you lose, you will leave Monsters University," she says, forebodingly. All in all, it's shaping up to be a real crowd-pleaser of a movie and we particularly enjoyed a scene in the trailer when the snail character tries his best to hurry to class!

The movie will feature Pixar's seventh collaboration with American singer-songwriter Randy Newman, though progressive metal band Mastodon announced via their Twitter page that they had written a song for the movie.

Mike and Sulley in Monsters University
Mike and Sulley in Monsters University

 A scene from Monsters University
A scene from Monsters University

 Mike and Helen Mirren's character Dean Hardscrabble
Mike and Helen Mirren's character Dean Hardscrabble

 A scene from Monsters University
A scene from Monsters University
A scene from Monsters University