Michael Jordan
Jordan was one of the most ruthless winners in sports history. He won six rings in two spells with the Chicago Bulls on either side of a brief foray into baseball. Meanwhile, M.J. developed a cruel streak and mentally tormented his teammates. He did this because he expected them to do everything to win.
“I didn’t really care If I broke them,” Jordan revealed after his retirement. “If they did get broken then they are not going to be helpful to us when we need them the most.” This didn’t win him any friends in the locker room but there’s no denying that he achieved brilliant results (via Basketball Network).