The greatest scifi antiheroes aren't just ruthless and hard as nails — they're also crafty. You'll never know what they're thinking, or whose side they're on, or how many aces they've slipped into nano-pouches somewhere on their persons. But which science fiction anti-hero is the cleverest cheat (or sorry,…

The first time I ever read the word "anti-hero," it was in an article about science fiction, and it's always seemed a very science fictional type of word — like anti-matter, or anti-gravity. Science fiction has its share of one-dimensional white hats, but the characters who capture our imagination are usually the morally …