Negative Nigel
Someone who dislikes a person or thing for no apparent reason, just as a stuck up British man named Nigel would be. The Negative Nigel has most likely never met or at least tried to talk to the person, or tried the thing or event that he judges so much. In general, the Negative Nigel is just negative about a lot of things, more than a Negative Nancy. In fact, Negative Nancy actually learned from Negative Nigel after they were together.
Tyler doesn't like Brandon because Tyler just doesn't like him.

Hey Tyler, let's go riding!

Ok well I hope that Brandon dude isn't there.
Why?
He's annoying.
Why is he annoying?
He just is.
But you haven't even met him...

Tyler is therefore a Negative Nigel.