A freedom fighter is someone who fights for freedom wherever there's trouble. Kinda like G.I. Joe! Such individuals usually start out as heroic archetypes, but through their never-ending battle against the forces of tyranny, they can often times grow hard and embittered. Freedom fighters appear in nearly all elements of speculative fiction ranging from everything between Flash Gordon to the Terminator film series.
The modus operandi of a freedom fighter is to affect change for the sake of the common good. They operate to the betterment of those under their care, and to society at large. Their actions should never run counter to the interests of those they are committed towards protecting. Some could argue that there is a fine line between a freedom fighter and a terrorist, and there are those who are more than willing to bend the definitions of either term in order to paint an individual with a certain color of brush.
The following list of characters is but a small taste of the various types of freedom fighters one would expect to find the speculative fiction genre and is by no means a complete list.