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This week, Pixar returns to the world of Monsters Inc. with Monsters University, and reveals what Mike Wazowski and James P. Sullivan were like as college freshmen. We spoke with several members of the MU team and learned secrets about the film. Here are 14 things you probably didn't know about Monsters University.

The story team thought about focusing the movie on Sulley.

Director Dan Scanlon, producer Kori Rae, and the rest of the Monsters University team were excited to return to the world of Monsters Inc., in part because we would get to learn more about Mike and Sulley than we did in the first film. At first they had hoped to center the film equally on both characters, but as they played with various story ideas, Scanlon says, "We eventually realized that if we make it both of their stories, it's nobody's story." So they decided to put the spotlight on one half of the scaring team. They tossed around a few possible plot lines for a Sulley-driven film. "You know him a little bit more, " Rae explains. "You know how his life ends up: he's this incredibly famous scarer." Maybe Sulley started out on a different career path and discovered scaring along the way. Maybe he enrolled in the School of Scaring, but wasn't any good at it.

"But every time we did that, " Scanlon says, "Mike's story rose to the top. It was always the more interesting story."

"There was more to discover, " Rae adds. "When we were trying to think about 'Okay, what would be the craziest thing? If we're trying to make this not predictable, what was Mike? Who did he want to be?' That would be a scarer. And if you look at the second movie, you know that didn't happen." Mike's story, they felt, had a stronger emotional component, and was more substantial.