The Testosterogue
I'm gonna be honest, I have no clue what this guy's deal is. He just kinda showed up yelling "LET'S DO THIS SHIT" and started punching out small children. He's pretty big. That's kinda his thing. He uh... he's not really all that complex. Although, he does have one weakness, nerds. In the presence of a true nerd, he completely loses his focus (or rather, what little he had to begin with) and goes into a berserker rage.*
He's smiling because he just ate a bus of children.