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10
Evil Robots Bent on Destroying Humanity
Image Gallery: Robots
Image Gallery: Robots

Where's this evil robot headed? Hopefully not for planet Earth! See more pictures of robots.

Colin Anderson/Brand X Pictures/Getty Images

In science fiction, robots can be friendly, helpful machines -- C-3P0 from the "Star Wars" movie series or the watchful B-9 from the 1960s TV series "Lost in Space," who scurried about on his tank-track feet waving his arms and shouting, "Danger, Will Robinson! Danger!" immediately come to mind.

But lest we humans become too complacent about the anthropomorphic super-powered mechanical servants that we fantasize about someday creating, it's important to remember the old saying that we should be careful what we wish for. The robots we envision as our tireless, loyal friends easily could morph into frighteningly formidable adversaries. And it wouldn't take much to flip the balance.

The great sci-fi author Isaac Asimov was among the first to recognize this unsettling risk. In his 1942 short story "Runaround," later republished in the 1950 collection "I, Robot," Asimov set forth what he called the Three Laws of Robotics, which were designed to protect us from our synthetic progeny. First: A robot may not injure a human being, or allow one to come to harm through inaction. Second: A robot must obey human orders, as long as they don't contradict the first law. Third: A robot must protect itself, but only to the extent that it doesn't conflict with the first and second laws [source: Asimov].

But in many instances in our fantasy future, those rules are honored mostly in the breach. Here are 10 examples of fictional robots that have murder in their artificial hearts.

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