E for Extinction
The Wild Sentinels were the result of a U.S. funded program in Ecuador to develop evolving, self sustaining Sentinels. The Wild Sentinel Master Mold, designed by Bolivar Trask, was designed to scavenge all technology and material within its test radius and build troops out of it.
Cassandra Nova used Donald Trask III to order the Master Mold to abandon its 'test radius', and send four giant Wild Sentinels to attack Genosha, before copying his DNA and killing him. This attack caused the death of almost all inhabitants of the island, about sixteen millions mutants.
Two of the Wild Sentinels reached Genosha and wiped out almost all of the inhabitants and then became dormant they were left alone for fear of reactivating them. The one-headed attacker was not seen again, whilst Toad and others transformed the three-headed Genosha attacker into a memorial to Magneto heedless of warnings.
The Amazon Belle in Chicago
At some point, a cargo ship, the Amazon Belle, loaded with Wild Sentinels who parasitized it, using every useless piece of metal to create more of their kind, headed up to Chicago. They travelled through Canadian waters and caused the death of several Canadian coast guards.
Eventually reaching Chicago, they started to investigate, killing every person they encountered, stating they were "potential mutants". The victims included Maria Bonnaventura and Joey Cascio, gangsters, and even dogs, before attacking Kitty Pryde, Shan Coy Manh, and Shola Inkose. The former X-Men stated that those Wild Sentinels had somehow evolved, being in a sense themselves mutants.
Finally, the Wild Sentinels attacked the University of Chicago during a public debate opposing the mutants and tolerance parts against Alice Tremaine's Purity hate-group. Campus security and the Chicago Police Department came but were overwhelmed by the Sentinels. Combining their powers, Kitty, Shan, and Shola were able to destroy all of them, except for one, damaged, that was recuperated by Tremaine who brought it home to repair it, and Shola and Kitty were then able to avenge their respective parents, killed on Genosha.
Giant Wild Sentinel revived
When Danger attempted to kill Charles Xavier at Genosha, 'she' revived the three headed model and gave it intelligence, but barred it from examining its original Genosha orders. When Kitty Pryde convinced 'him' to do so, he was shocked by the magnitude of his crime and left to "spend some time alone".
He returned to Earth months later, as news of the Breakworld Bullet reached the heroes in New York, so it provided transport up to the Peak Station. Following the incapacitation of the heroes due to the magical protection the bullet had against interference, this Sentinel tried to save the world by ramming the Breakworld bullet off course, in an act of penance. His sacrifice was in vain however.
When M.O.D.O.K. was being contained by Baron Mordo, he took over all of the Sentinels of the Sentinel Territories to free himself, including the Wild Sentinels which attacked and vaporized the Baron's Mindless Ones. 
He tried to explain his acts and to apologize, knowing he wouldn't get any forgiveness. Ultron then made the Wild Sentinel close, crushing Xavier in it.
- 22 appearance(s) of Wild Sentinels
- 1 appearance(s) in handbook(s) of Wild Sentinels
- 12 minor appearance(s) of Wild Sentinels
- 7 mention(s) of Wild Sentinels
- 1 mention(s) in handbook(s) of Wild Sentinels
- 11 image(s) of Wild Sentinels
- 1 quotation(s) by or about Wild Sentinels