What causes bullies to have aggressive looking faces?

[Savingtimeforya]

Are they purposely making their faces angry or are their personalities seeping through their body languages?

[HighlyVolatile]

I haven't really noticed the facial things. Actually, mine in high school seemed soft and kind. One was a black boy who jumped me after school together with his friends. I ended up accidentally breaking his arm. The other was actually a football star. He beat me down so hard that I even cried in front of my friends when he tackled me and couldn't get out. But he still had a nice and friendly look on his face. He was a very charismatic and friendly-looking guy.