If I was the bad boy, then I was going to be the baddest boy of ...
[as children, Metro Man is given stars from the teacher, while Megamind is made to stand in a corner]
Megamind: No matter what happened, I wa always the last chosen, the odd one out, the black sheep... the bad boy. Was this my destiny?... Wait. Maybe it WAS! Being bad is the one thing I'm good at! Then it hit me: if I was the bad boy, then I was going to be the baddest boy of them ALL!
[sets off a chemical explosion in the schoolhouse]
Megamind: I was destined to be a supervillain, and we were destined to be rivals! The die was cast! And so began an epic enduring lifelong career... and I LOVED IT!