Avengers Arena. Sentinaughts - One of the types of sentient robots who live in the free robot city of The Core, Sentinaughts are apparently based on the Sentinel design. They vary in size from roughly human to the large stature of traditional Sentinels. Nano-Sentinel - Microscopic sentinel type of tech created by Cassandra Nova and implemented in various ways by other users. Moving within the body and attaching themselves to the brains of humans and mutants alike, turning them into mutant-hating assault drones with no self control. Ready to take down any mutant who so much as looks at them. An unknown form of human made sentinels created by Simon Trask using a nanite based Sentinel Tech virus. The victims become anti-mutant activists who later, at Trask's command, are fully transformed into lifeless robotic Sentinels mindlessly following Trask's orders. Adamantium Cyborgs - Near-fully mechanical mutant hunter killers refitted by Weapon X with the titular metal as an endoskeleton using sentinel based nanotech. Coming in numerous alphabetical categorical batches, these bionic weapons can shed their skin revealing a murderous automaton with the abilities of various X-Men heroes & villains integrated into them. Core/Central Command - A biotech Master Mold variant behind the design parameters of the new Prime Sentinel's. Other versions The following are alternative versions of the Sentinels, which appear outside of regular Marvel canon. Age of Apocalypse In the "Age of Apocalypse" timeline, Bolivar Trask created the Sentinels with his wife Moira. These Sentinels are equipped with several body-mounted gun turrets, and their primary directive is to protect humans rather than to hunt mutants. They are capable of cooperating with mutants to further this mission. Later, the Sentinels are adapted by Weapon Omega to serve a reverse purpose, and now aid in the hunting of the human race. Days of Future Past In the "Days of Future Past" timeline, 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. Hembeck In the joke comic Fred Hembeck Destroys the Marvel Universe, the X-Men are killed by silent, black, man-sized "Ninja Sentinels". Here Comes Tomorrow In the "Here Comes Tomorrow" future timeline, a Sentinel named Rover is Tom Skylark's companion and protector. After more than 150 years of being active, Rover has become self-aware and, possibly, capable of emotion. House of