Mike and Sulley had a shaky relationship from the very beginning. The pair met at Monsters University in the 2013 prequel movie, and the two immediately proved to have a powerful rivalry.

I think the 2001 movie is pretty much perfect and ... Monsters Inc. (along with Monsters University and the series Monsters ...

Why it rocks: Who knew a summer zombie movie starring Brad Pitt could ... and John Goodman return for college hijinks in Monsters University; Ryan Reynolds and Jeff Bridges team up for R.I.P.D ...

From the moment these two mismatched monsters met, they couldn't stand each other. This movie unlocks the door to how Mike and Sully overcame their differences and became the best of friends.