Sentinel MK IV from Uncanny X-Men Vol 1 151 0001.jpg
Real Name
Individual code numbers
Current Alias
Sentinel Mk IV
Sebastian Shaw (manufacturer), Sentinels Mk I (previous model, defunct), Sentinels Mk II (previous model, defunct), Sentinels Mk III (previous model, defunct), Sentinels Mk V (following model/permanent fusee), Sentinels Mk VI (following model/permanent fusee), Tri-Sentinel (fused form, defunct), Sentinels Omega Class, (following model from Earth-811), Nimrod (following model from Earth-811)
Robotic agents of the government of the United States and of Sebastian Shaw
Base of Operations
Mobile in the United States
Living Status
Mutant hunters


Unusual Skin Color
Unusual Features
Robotic features
Place of Birth
Sentinel factories across the United States
Creators and Appearances


After the second Brotherhood of Evil Mutants tried to assassinate Senator Robert Kelly while he was performing a public research on the possible threat of superhuman beings and mutants, the President's Cabinet authorized secret and illegal Project Wideawake to research and, if needed, capture any superhuman mutant that the Project management could consider a threat to national security. The Project's head was Henry Gyrich, answering only to the President, with Senator Kelly himself as an special consultant.

The government contacted industrial tycoon Sebastian Shaw, ignoring that Shaw was a evil mutant himself, to build the new breed of Sentinels. Shaw Industries is authorized by the government to build top-secret Sentinels to be used in Project Awakening.

Shaw produced three models: Mark IV Sentinels, Mark V Sentinels and Mark VI Sentinels. None of these models proved to be as formidable as the Mark II and Mark III Sentinels. The models were constantly being modified and improved. Shaw secretly used Sentinels to attack his own enemies, the X-Men, but the government was unaware of this.

Powers and Abilities


  • Cables: The Mark IV could attack with cables from their wrists.
  • Energy Blast: The Mark IV had an amount of different blasts, including but not limited to plasma, electrons, stunning gas and heat, that could be shot from their palms and eyes. They were also armed with a disintegrator that only worked with inorganic matter.
  • Flight using jets built into their feet.
  • Learning Program: A special learning program allowed a particular Mk IV a certain advantage when fighting an enemy, but only after at least one minute of analysis. This data could be stored for future uses against the same enemy, so that any Sentinel from any model could access the information (and Shaw or the government could authorize the development of special weaponry). However, any needed modification would take at least one week.
  • Mutant Detection: The Sentinels constantly scanned all the living beings in the immediate surrounding area and were able to determine if they were humans or mutants.
  • Robot: Due to its nature, the sentinels were protected by the sheer strength of the hull. They could not be affected by emotional or mental attacks, nor by illusions. However, they were susceptible to attacks affecting machinery.
  • Searching Lights: This model's eyes were equipped with searching lights.

Physical Strength

Mk IV Sentinels were able to lift up to 70 tons.



Internal weapon systems.


Flight under their power.

See Also

Links and References


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