This game is all about identifying "the bad guy". I'll provide a book and if you know the name of the bad guy in the book then you reply with his/her name and provide a book of your choosing for the next round. Of course, in some cases the "bad guy" is a matter of opinion or there might be more than one so you just pick the one that you think is the ultimate bad guy from that book/series.
Example:
Answer could be Sauron, Sauroman, Gollum etc.
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Here we go (an easy one to get the ball rolling):