Height: 6'6"
Weight: 250 lbs. normal, 500 lbs. armored
Eye color: Blue
Hair color: Black

In light of Russia's struggles to build a democratic political system and a market economy to replace the strict social, political, and economic controls of the communist period, Piotr Rasputin left his poverty-stricken family to make a living in the United States. Already aware of his incredible powers and unable to find adequate work to support his family, Piotr joined the Russian Mafia. Downplaying his abilities, he quickly rose within the Mafia ranks to become an enforcer. Since he cared more about his family than himself, Piotr sent home every cent he earned.

Due to his trusted position, Piotr was often charged with the overseeing of secret arms deals. One such transaction threw his life into a tailspin when he and his associates were double-crossed and attacked. All the men were killed save Piotr, who used his mutant power to become an impenetrable being of organic steel. His secret now exposed, Piotr was inclined to wait for the Sentinels to arrive to annihilate him. Instead, he was discovered by Professor Charles Xavier and asked to join the X-Men, a team of young mutants dedicated to bringing about peaceful coexistence between the two species of man. As Colossus, Piotr now serves as the squad's superstrong powerhouse.