14 sci-fi traitors who turned on evil to fight for what's right

With NBC’s Revolution tossing in more twisted alliances than you can shake a stick at, we’re reminded of all the great sci-fi traitors who have gone on to help fight the good fight.

Revolution’s Miles Matheson is the latest example of the old switching-sides trope, but good sci-fi is littered with former baddies who’ve decided to use their skills for good instead of evil.

From Star Wars to Stargate SG-1, the ranks of the good guys are filled with former baddies just looking for some peace and peace of mind. Everyone loves a good redemption story, so here are a few of our favorites.

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