An individual whom evolution and society both favor because he exhibits selfish, cruel, extroverted genes which will enable to him to successfully negotiate the adult world. Society pretends to dislike him, while hypocritically acting as if we approve of his behavior. Contrary to popular belief, bullies often ARE successful later in life, while their victims are not. After all, it is strength humans value and strength that rules us.
See also jerk
and nice guy
Bullies may be beneath contempt, but I also hate to admit that I may envy them.