Rivals

A common type of character in movies concerning sports, a rival may not actually be an evil person but is in the way of the hero. Many rivals resort to cheating or unsporting tactics, so they could be considered dishonorable. There are rivals, however, that do fight fairly with the hero and even wish that they become stronger so they have a fair battle in the future. Outside sports, it might even be possible for the rivals to actually be true friends.