24. Kyle Katarn
A former stormtrooper who defected to the rebel Alliance, Katarn became a one man wrecking crew who successfully performed many covert missions during the rebellion. Later he TRAINED HIMSELF to be a Jedi and he did it so well that Luke Skywalker let him teach at the Jedi Academy without any prior experience. During the Yuuzhan Vong war he helped significantly by developing new strategies to combat the invaders. Kyle Katarn might very well be the most dangerous man in the galaxy, being an expert stormtrooper, covert operative, and one of the most powerful members of the New Jedi Order. Although most of his appearances came in comic books and video games, Katarn is easily one of the most memorable characters of the Expanded Universe and easily belongs among the all-time great Star Wars characters.