Siberia

Siberia is an extensive region constituting almost all of North Asia. Comprising the central and eastern portion of the Russian Federation, Siberia was part of the Soviet Union (USSR) from its beginning, as its predecessor states, the Tsardom of Russia and the Russian Empire since the 16th century.

Marvel Comics
In the mainstream continuity of the Marvel Universe, Siberia is the home of the Rasputin family. They lived on the Ust-Ordynski Collective near Lake Baikal. The most notable member of the family is Peter Rasputin, who is a mutant who could convert the cells of his body to organic steel. As a teenager, he immigrated to the United States and became a member of the X-Men under the code name Colossus. Only slightly less well-known than Peter is his younger sister Illyana Rasputin - also a mutant. In combination with her mutant powers, Illyana also became the ruler of Limbo and took the name Magik. Other members of the Rasputin family include a third sibling, Mikhail, their parents Nikolai and Alexandra and their grandparents Grigori and Elena.