Eliezer Yudkowsky/YMMV

• Affably Evil: Has tossed around "super villain" as a potential hobby more than once, and some of his morality proofs are a little... concerning, if he can even comprehend choosing between damning 10 million people to get dust in their eyes, or 12 hours of torture for one person. The fact he has a near-perfect record in the AI-Box experiment of his own design doesn't help one bit.
• Derailing: He has a habit of going down the list of tvtropes fanfic recommendations and leaving reviews on ff.net exclaiming how amazing it is that the author’s story is just as or almost as good as his own writing while dropping his story’s name. He probably reads these stories but considering that in roughly 30% of these reviews he quotes lines of these stories out of context in order to draw false parallels to his philosophies, he may simply be skimming them.
• I Am Not Shazam: No, he has never used Less Wrong as his handle.
• It's All About Me: Maybe. But he doesn't leave much wiggle room to argue with his viewpoints when he folds the very foundations of 'rationality' into his personal philosophy and names his blog collab Less Wrong.
• Memetic Badass: Has his own Eliezer Yudkowsky facts.
• Single-Issue Wonk: He has this thing about death, in that he... doesn't really see it's purpose. If you do think that death is part of the natural order of things, then he tends to bring out the soapbox a little.
• Values Dissonance: While his works are an interesting read no matter where you come from morally, a lot of his stuff is a bit... disturbing if your Paranoia Fuel involves Borg, Cybermen, Replicants, eugenics, individual or social reprogramming, just about any other form of Cybernetics Eat Your Soul or Hive Mind in fiction, or just something the Genre Savvy Doomed Contrarian would run like hell from. Granted, he goes out of his way to not use fiction as a starting point for ethics discussions, but you never really know...