The first Sentinels produced by Games Workshop looked nothing like its modern day descendant and instead looked like an egg on toothpicks. The Sentinel is a bi-pedal walker used by the Imperial Guard in the Warhammer 40,000. It appears as an armless walker, in contrast to walkers of most other races which have arms, additionally the sentinel is typically armed with only one heavy weapon. The current sentinel bears some resemblance to the imperial AT-STs from Star Wars. Although the scout variant sentinels have open driver compartments rather than the enclosed cabins used by the armored sentinel variant.
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