You're not a nerd man. XD Anyways, I'll go ahead and say mine.
My favorite legendary: Reshiram
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Reason: I mean just look at it. Majestic and so bad-ass. Would you want to fight something like this?!? DIDN'T THIN SO. It also has crazy good stats for being the legendary mascot of a game. And, it's so cool looking. Just look at it. That's why Reshiram is my favorite legendary.
Favorite Non-Legendary: Absol
Reason: Once again, look at it. A pure bad-ass pokemon and yet, it's cute. People are afraid to even look him in the eyes. He's that bad-ass. That's why he will always be my favorite non-legendary.