doppelganger

A doppelganger is a stranger who looks exactly like you — not a twin, no relation, just your copy walking around. The word is German: Doppelgänger, a double-goer. In old stories, meeting your double was a bad sign. Today it is mostly a strange, funny coincidence, though thrillers still love the old fear. In the animation, two men with the same face and the same stain on their shirts meet in the street.