A doppelganger isn’t just a double, but an evil double, a terrible twin to you. I always found it funny that the doppelganger is supposed to be the evil one, though, don’t you? Just as likely that the original is the evil one, and the doppelganger the good. But that goes against our natural inclination to see ourselves as the heroes of our own stories, and the other as the outsider, the enemy, the one trying to take away everything we have.
