Michael Cera plays someone we have not met before

Finally, Michael Cera being portrayed as something other than a sensitive youth, finding his way in to hilarious sexual situations. Youth In Revolt looks like a comedy, and judging by this trailer, is most certainly a comedy.
Boy wants to get girl. Boy can't get girl, so decides to make for himself an alter ego named Francois. Francois is a deeper voiced, sarcastic version of himself, who seems to have stumbled out of Wes Anderson's closet. He also has a mustache. I will leave it up to you to decide whether Francois is merely an alter ego, or is in fact an example of multiple personalities.