There was this kid in my school when I was little. He was constantly getting into fights, always looking to start trouble. I don't think he was a bad guy either, he just didn't think things through, like never. Even bullies were careful around this guy and rightfully so, you could never be relaxed around him cause he could change his mind about you in a second and acted on impulse. I think they later diagnosed him with ADHT.
School didn't go too well for this guy, and later in life he got connected with bad people, so be extra careful for your kid.