Your clone.

I've met many people (and for some reason, mostly in a construction institute) who looked very much like the heroes from Heroes of Might and Magic III. I don't remember the exact number anymore, but it was definitely more than five. Moreover, the female heroes mostly resembled men, and vice versa.

But there's nothing to learn from a clone.
If I met two clones, they would either become rock stars or get drunk together!:p