Sammy is a snob, plain and simple. He's a self-centered asshole who has little regard for other people's feelings. He's incredibly smart and more then a little vindictive, but he's not completely without a heart. He has a massive crush on Jesse, and has gone out of his way to try and boost his self-esteem on several ocassions.
On a personal note: Sammy is unlike my other characters because I wanted to make someone who wasn't kind-hearted and good natured like the rest of them, and instead was sort of a prick. Its been a bit challenging to write him in a way that people would want to read, but I have a lot of fun with him.
Art by sorcererlance