According to Cinema Blend on Jan. 28, a release of 25 variant covers for Empire magazine which reveals stunning graphics of Bryan Singer's "X-Men: Days of Future Past" could have revealed a familiar unstoppable Sentinel. A description given by the production designer John Myhre may give speculation to "X-Men" fans that there is a stunning similarity to the ever popular Nimrod.
"They're biomechanical weapons. We had to come up with what would be the ultimate version that could actually, in principle, stop the X-Men. We started with this idea that they were almost made up of magnetic plates slapped over one another, imagining that the plates could contract or grow, so the Sentinel can be skinny to get through a small space or the plates can open up to become a bigger shape. So they have become virtually unstoppable".
This particular Sentinel, as seen described, is a highly evolved being, capable of adapting to the environment and pretty much indestructible. Also, one may take note that Nimrod had also made its first appearance in the "X-Men: Days of Future Past" version of the comic book as well.
Also, it is a being of sentience and is thought to be the "Terminator" of the mutant world. It also has the ability to control entire computer systems as well as a flight ability.
Upon comparison, Nimrod pretty much outdoes its original predecessors meaning the original Sentinels are seemingly robotic looking. They appear in an ordinary grey and purple color as well as reaching considerable height.
"X-Men: Days of Future Past" is scheduled to be release in theaters May 23.