Though plain looking at best, he still tries to help those around him. With a less than charming past, who's better fit for saving the world!
I found it really funny.
Okay, for an actual answer, while he does look like that because it makes me laugh, I also found most main characters to look the same most of the time, so I figured using my guy to do something funny would be great! And sure he's kind of unassuming, but that's where his real power comes in. Being an assassin is a lot of work, and to get good requires a lot of blood, sweat and tears from years of training. But why need that when you can trip, accidentally shoot a gun, and hit your target in one shot! Somehow, Buford has incredible luck and quickly rised to become the number one active assassin to date! However, I think he's going to need more than that with his new target he's been assigned...