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Killer Robot

"Two robots walk into an eating establishment... and destroy all humans!"
— Robot Stand-Up Comedian, Fairly OddParents

A robot or other physically autonomous machine guided by a level of intelligence and a homicidal urge to Kill All Humans. Prone to ending sentences with exclamation points as well as Spock Speak. Killer Robots are so common because A.I. Is a Crapshoot.

Humanoid killer robots abound, such as the original R.U.R., or those in Doctor Who's subtly named serial The Robots of Death. However, killing machines come in all shapes and sizes; from robotic dreadnoughts in space to airborne robo-fighters, through small drones and down to microscopic or even nanoscopic killers.

Although the traditional versions of this trope were robots built in a Mad Scientist Laboratory who Turned Against Their Masters, today a more common plot involves the villain finding and turning the switch on a kid's Robot Buddy from "good" to "evil", forcing the cast to destroy them. Especially scary because this was a good friend who has become completely heartless and bent on death.

Mechanical Lifeforms are capable of veering into this, but generally tend to skimp on the Spock Speak in favor of something a bit more colorful.

Subtropes:

See Second Law My Ass for a milder form of this behavior.


Just a MachineRobotMechanical Horse
Just a MachineRobot Roll CallMarionette Motion
Killed to Uphold the MasqueradeSpeculative Fiction TropesKill It with Water
Stable Time LoopImageSource/InternetRotten Tomatoes

alternative title(s): Badass Automaton
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