Good catch. I was thinking of Snape from Harry Potter.
Sergey Karjakin and Adam Driver

I know this is way later but I have been thinking this for a while now and it has been driving me nuts. I was going to google Sergey Karjakin Kylo Ren on google, but I couldn't think of the actor Adam Driver's name, and then I saw him on google, and I had only searched for Sergey. Weird, I think it is the intense focused stare or expression of Sergey and Adam when he plays Kylo that adds to the similarity, because they do have some differences.
Just watched The Force Awakens last night and couldn't help but notice how much Kylo Ren(played by Adam Driver) looked like Sergey Karjakin:
Thoughts?