Prime Sentinel

Prime Sentinels are an advanced type of fictional Sentinel appearing in American comic books published by Marvel Comics. They are depicted as a humans-turned-cyborgs that uses nanotechnology from the "Days of Future Past" alternate future. Like the original Sentinels, they are typically depicted as antagonists to the X-Men.

Creation
The Prime Sentinels were created when Bastion initiated the "Operation: Zero Tolerance" program. These Sentinels were actually humans who had been fitted with cybernetic nanotech implants which, upon activation, transformed the humans into armored beings with powerful weapons systems. These altered humans were set up as sleeper agents, unaware of their natures until a signal from the Operation: Zero Tolerance base activated their programming. These Sentinels were used by Bastion to capture Professor X for his own purposes, as well as attack various mutants associated with the X-Men across the country. Bastion and his Prime Sentinels were eventually defeated by the X-Men with help from the government agency S.H.I.E.L.D. who shut down Operation: Zero Tolerance.

Powers and abilities
Prime Sentinels are equipped with several technological enhancements, superpowers bestowed ranging towards: flight, enhanced physicals, optic lasers and force-blasts as well as being able to dampen or disrupt the powers of mutants around them. On board scanning and homing sensors which enable them to detect the presence of Homo Superior within their vicinity, backed by combat computers which allow them to compensate for surprising events (such as the arrival of police cars) faster than normal humans. Finally, their programming may use the natural personality along with the original form of the host to lull unsuspecting targets into conversation, at which point they dampen their powers and kill them.

Omega Prime Sentinels, like Karima Shapandar, are equipped with mechanical regeneration coupled with some level of electromagnetic powers, but these were apparently prototypes, as their designs are clunkier than other Prime Sentinels. Other tools Karima shows that Omega Sentinels are equipped with include adaptive countermeasure facilities which enable them to fabricate specialized weaponry tailored to counter specific mutant adversaries. Able to become resilient towards damage dealt prior to their chassis, as well as produce weaponized solutions angled towards dealing with a specific mutant target.

In X-Men 2000 Annual they, like Omega Sentinels, are shown to have limited nano-mechanical morphing abilities. Able to morph or sprout cannon artillery from their body parts for greater arms fire. One of the deadliest abilities of the Prime Sentinels is displayed to be the lethal injection of nanomachines into another human being that will turn the target into a Prime Sentinel. It can be noticed that in the selfsame episode Rogue tries to use her personality-absorbing powers on one of the Prime Sentinels only to find nothing at all: she then states that nothing of the original host remains once the Prime Sentinel personality has taken over, though this is questionable as Magneto and Professor X were able to restore Karima's personality.

Known Prime Sentinels

 * Agent Boyd
 * Agent Mathers
 * Arvell
 * Curtis
 * Daria
 * Felipe
 * Ginny Mahoney - Known as Unit #1031.
 * Helmut
 * Karima Shapandar
 * Mustang
 * Number 5
 * Sanjit Shaara - Known as Unit #3.
 * Saroyan
 * Tanya

Television

 * A variation of the Prime Sentinels appear in Wolverine and the X-Men. In the Sentinel-dominated future, some people were turned into cyborgs made from human technology and are shown to have a failsafe should their human half get compromised by telepaths.
 * The Prime Sentinels appear in X-Men '97. They consist of various humans, such as Bolivar Trask, Trish Tilby and Rose Gilberti, that were subjected to a techno-organic virus by Mister Sinister, transforming them into Bastion's sleeper agents who remained unaware of their change and new purpose of OZT. When detecting a mutant threat, they would transform into more dangerous versions of traditional Sentinels that could withstand even partial dismemberment and could only be taken out with an electro-magnetic pulse. After Professor X hijacked Magneto to restore Earth's magnetic field, the Prime Sentinels were reactivated and assumed their mission to attack both mutants and humans. The Prime Sentinels' humanity was restored when Jean Grey used the Phoenix Force to attach a Mnemonic Scrambler on Bastion's forehead, severing the connection with the Prime Sentinels.

Video games

 * Prime Sentinels appear as bosses in X-Men: Next Dimension, which is based loosely on the events of Operation: Zero Tolerance. In the game, Prime Sentinels released their leader, Bastion, from S.H.I.E.L.D. custody. During an invasion at the Xavier Institute, they captured Forge after he destroys a Prime Sentinel. Later, they attack Magneto in Genosha, but Magneto destroys them. After the X-Men makes an uneasy alliance with the Brotherhood of Mutants, they attack the Citadel, and several Prime Sentinels were destroyed.
 * Prime Sentinels appear in X-Men Legends. In this version, they are called Bio-Sentinels and they are under control by General William Kincaid. They were destroyed when the X-Men saved a younger version of Bishop from being killed. In the end, it was revealed they were controlled by Master Mold (which is a giant Sentinel in the game). The X-Men defeated Master Mold and the Bio-Sentinels were seemingly destroyed.
 * Prime Sentinels appear in Marvel: Avengers Alliance.