Our hero wakes up in the slave pens, but escapes with the help of Cyclops. He later joins "The Outcasts", which consist of Toad, Sauron, Mastermind, Brute, and Forge. The Shadow King realizes Nate's existence and tells Apocalypse. So he sends Domino out after him. "The Outcasts" attack a "culling", and Nate is saved by Theresa, a new mutant. We also meet Essex.

Essex joins The Outcasts, along with Theresa. The group decides to survey a holding pen, and is discovered and attacked by some Infinites. This attack is seen by Apocalypse. After the attack, Nate and Theresa visit Xavier's mansion - home of the X-Men and Magneto. Brute finally figures out that Essex is actually Mr. Sinister, so Sinister promptly kills him.

Domino, Grizzly, and Caliban catch up with The Outcasts. Domino kills Mastermind as he was pretending to be Apocalypse. Toad kills Caliban, Grizzly kills Toad, and Forge wipes out Grizzly. Than Forge confronts Essex, and Sinister kills him. Nate finds him later, and as Forge is dying, he tells him to find Magneto.

But Nate heads off to find Sinister. Nate learns his origin from Sinister. Sinister explains how he took DNA from Jean Grey and Scott Summers (Marvel Girl and Cyclops) and created Nate to be the ultimate weapon against Apocalypse. Nate refuses to believe this, and a battle ensues, which ultimately leads to Sinister's death. Then Nate heads off to confront Apocalypse. (Note: This story concludes in X-Men: Omega and X-Men: Prime)

Nate finds himself in the Swiss Alps in our timeline. He has no idea where he is, or where he's going. He makes his way to a small town and gets some help from Sven, a man he meets on the street. Sven takes him to his home. Days later, Madelyne Prior appears at the door. Also: Sugarman sends Rex out after Nate.

The boy known as Nate Grey is arguably the most powerful mutant alive. Created by Sinister for the sole purpose of killing Apocalypse, Nate was able to temporarily escape his destiny when he was freed by Cyclops. Rather than trust Cyclops, Nate ran from him and eventually stumbled across Forge and his band of rebel mutants. There, Nate began to refine control of his considerable power under the tutelage of Forge. He met a woman named Theresa who he quickly became enamored with and seemed happy for some time. Eventually, however, Nate is manipulated by man known as Essex (in reality, a disguised Sinister) into attempting to fulfill his destiny of killing Apocalypse.

For a wonderful additional bio of X-Man, go here.