Sentinels

The Sentinels are a group of mutant-hunting robots appearing in American comic books published by Marvel Comics. They are typically depicted as antagonists to the X-Men. The Sentinels played a large role in several X-Men animated series, and have been featured in several X-Men video games. The Sentinels are featured prominently in the 2014 film X-Men: Days of Future Past, and made brief appearances in the 2006 film X-Men: The Last Stand and the 2016 film X-Men: Apocalypse. In 2009, The Sentinels were ranked in IGN as the 38th Greatest Comic Book Villain of All Time.