I love the word doppelganger. It is great.
It is your evil twin. It's etymology is German, please don't mention the war. It means "double-walker" . It has a deelteken above the 'a' in 'ganger', but I don't know how to do that. Is there an English word for a deelteken? If so, how about the 'kappie'? I digress.
Back to doppelganger. I know a guy who plays lock, but doesn't jump in the lineouts since he injured his knee. His knee is okay now, but he engaged himself as part of his rehab in a diet that resembled Morgan Spurlock's in Supersize Me. 30 days he laughed when he watched the movie, try three years. He goes by the name of Yogi. People know him. He does speeches at 21st's for a living.
His doppelganger is Wales' openside flanker, Colin Charvis. He doesn't jump in the lineouts either. They both play their rugby in red and white, and he got famously cleaned by Jerry Collins while Tana pulled his gumguard out to stop him swallowing his tongue. We could draw parallels all day but the proof is in the pudding. And he likes pudding. So do I.