Jasper (consider this spoiler)
I felt pretty bad for Jasper. He basically got lulled into helping Sarah and all he got in the end was a hug :( He at least deserved a peck on the cheek.
Perfect example of how the mean guy (that guy at the beginning that just wanted to get laid - think his name was Chris) got more action than the nice guy who only got beat up (twice!) who only got a hug at the end :(
Anyways I thought Jasper was a cool character.