This advanced Sentinel is so overpowering that it's hard to see any other X-villain, let alone any other Earth-based Marvel ...

Gregor, Nimrod gloats, “Sentinel City is not any outpost or mine ... Human or mutant, nobody on Earth is safe from the rise of Marvel Comics’ most dastardly artificial intelligence this ...

In the years since, the Sentinels have evolved: the Tri-Sentinel, Nimrod and the Omega Sentinel ... hunt down and kill mutants,” according to Marvel. RELATED: Raid on Graymalkin: Marvel Teases ...