The Sentinel Services is a government agency within the U.S. Department of Defense. Its single, greatest purpose is the protecting of the nation against lawless mutant threats, or so they claim. This agency has been accused of targeting and imprisoning mutants in detention centers needlessly.
While it's not illegal to be a mutant, it is illegal to hide it from the government, thus the need for an X-Gene test, which is conducted by Sentinel Services to determine whether or not any given individual is a carrier of the gene. Using a mutant ability in public is equivalent to using a deadly weapon in public and can result in incarceration. Reed Strucker stated that when Sentinel Services involved itself in one of his previous cases, the mutant suspect disappeared.
Sentinel Services was founded several years ago after the constant battles of warring mutant groups resulted in many innocent humans getting caught in the crossfire. The government and public demanded something be done to contain mutant threats. Sentinel Services operates with little oversight and due to the amended "Patriot Act", they can violate civil rights and abduct and detain mutants without the need of a warrant or lawyer if it is deemed that the mutant is a danger to the community. Sentinel Services employs different technologies in the aid of capturing mutants, such as drones to scan locations and neighborhoods for suspects. At some point, Sentinel Services also created the Sentinels for the purpose of hunting and capturing mutants too dangerous for agents to approach.
Sentinel Services is first seen when a team of agents including Jace Turner appeared at the Strucker house after an incident at the local high school in which Andy Strucker's X-Gene activated in the middle of a school dance and nearly destroyed the gym. His sister Lauren Strucker was also seen using her mutant ability to shield herself and other students from falling debris. Operating under the amended Patriot Act, they forced their way into the Strucker home and attempted to apprehend the Strucker siblings with no warrant or lawyer needed. The family escaped thanks to Lauren's ability and met up with the Mutant Underground in an attempt to flee to Mexico, where Sentinel Services has no jurisdiction and the mutant laws are looser. Sentinel Services came to the workplace of Reed Strucker to collect all the information on his cases and his computer. Through unknown means, the service was able to track down and corner the Strucker family and members of the Mutant Underground, ordering them to surrender before deploying the Sentinels to apprehend them. Before Reed was able to escape with his family through a portal created by Blink, Sentinel Services shot and captured him.
- Sentinels — robots capable of tracking and immobilizing targets.
- Immobilization Rounds — capable of paralyzing a target without causing much physical harm.