When sci-fi authors imagine the future, they don’t just dream up shiny utopias and even shinier spaceships, they also consider all the horrible ways things can go wrong. Climate change. Deadly superviruses. The sucking void of space. The future is chock full of things that can kill – but the worst things of all murder by choice: malevolent AI intelligence, alien menaces, and mad scientists playing God. In genre focused on all the ways the world will end, these sci-fi villains are determined to bring about the bangs and whimpers. These are the 10 most terrifying villains in sci-fi books, who make the future anything but bright.
