Sentinels are a fictional variety of mutant-hunting robots, appearing in the Marvel Comics Universe. Created by Stan Lee and Jack Kirby, they first appeared in ‘The X-Men’ (vol. 1) #14 (1965). Sentinels are programmed to locate mutants and capture or kill them using energy weapons and restraining devices; they are capable of flight, and can detect mutants at long range. Several groups of the robots have been created or led by a single, massive Sentinel, called Master Mold.
Because Sentinels are designed to hunt mutants (who often represent the protagonists of Marvel stories) they are usually employed as supervillains or as the tools of other villains. While many are capable of tactical thought, only a handful are self-aware. In the ‘Days of Future Past’ story, which takes place in an alternate future, the ‘Omega Sentinels’ have advanced technologically and become the de facto rulers of the United States. The most powerful among them is Nimrod.
The Daily Omnivore 
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