A fighter is a character in that participates in a fight. In fiction, a fighter's potency can range from that of a martial artist to a powerful deity that can warp reality. What all fighters have in common is that they have an intent to do what they desire to do whether it is anything heroic or villainous. The heroic and villainous fighters in fiction would fight any type of battle whether they are simple duels to an all out save-the-world crisis. In the end there are usually a winner, loser, or a typical draw.
In fiction, the fighter have special powers like the ability to fly or to manipulate the lightning. There are many types of fighters who wield unique abilities. There are different types of fighters such as knights, soldiers, aliens, gods, giants, ghosts, mutants.