Universe
Ultimate

Real Name
Piotr "Peter" Nikolaievitch Rasputin

Aliases
X8

Identity
Publicly known

Citizenship
Russian

Place of Birth
Siberia, Russia

First Appearance
Ultimate X-Men #1 (2001)

Piotr Rasputin was smuggled into the U.S. from Russia at age nine, for his own personal safety as opposed to anything threatening his family, most of whom still live in Russia. After a childhood described as violent and miserable, Rasputin discovered his mutant powers and began earning money by performing feats of super-strength for tourists. He also realized that he was good at it. Eventually returning to Russia, he faced death from a Siberian firing squad, but was rescued and recruited by the Red Mafiya (the Russian Mafia). Not a criminal by nature but unable to resist the attractive profits, Piotr became an arms dealer and sent almost all his earnings to his family. When an arms merchant employed by Magneto's Brotherhood of Mutants double-crossed him during a transaction, Piotr exposed himself as a mutant by assuming metallic form to repel his attacker's bullets. In the aftermath of the battle, Jean Grey, who was tracking down potential X-Men, came upon the scene and recruited Piotr. As Colossus, Peter proved an exceptional combatant against X-Men foes such as the Sentinels and Magneto's Brotherhood of Mutants, and he developed a personal competition with fellow recruit Wolverine.

After a few months of action Colossus decided the X-Men only valued his strength, and grew jealous of the romances among his teammates. He returned to Russia, vowing never to use his powers again; however, after Cyclops and Marvel Girl followed him and urged him to return, he rescued an endangered submarine, winning worldwide recognition. Colossus rejoined the X-Men, frequently teaming with Wolverine. When the Brotherhood of Mutants resurfaced, again led by Magneto, Colossus almost turned on Wolverine during battle. When Magneto used his control over Wolverine's metallic skeleton to torment him, Colossus defeated and captured the villain.

Although Colossus continues his rivalry with Wolverine, he realizes the motives are unrequited. Peter was briefly interested in a mutant whom he and his teammates rescued, but later he learned that she was no good. More recently, there have been hints of a romantic spark between Colossus and a fellow mutant lady; but as more of Peter's friends pursue inter-team relationships, Colossus's self-doubt and feelings of isolation may yet return.