Aleksander Lukin is a fictional character, owned by Marvel Comics who exists in the Marvel Universe. He first appeared in Captain America (v5) #1, and was created by Ed Brubaker and Steve Epting.
Born in the Soviet village of Kronas some time in the late 1930s, Lukin's village is used by the Red Skull as a base of operations during the Second World War. Soviet troops attempt to retake the town, assisted by the Western Allies' superhero team the Invaders (including Captain America and Bucky). Lukin's mother is killed in the course of the battle. The leader of the Soviet forces, Vasily Karpov, takes the orphaned Lukin under his wing.
In the ensuing decades, Lukin became an important figure in the Soviet military and the KGB, rising to the rank of general. When his mentor, Karpov, passes away, Lukin is left in custody of a large cache of special projects developed over the decades, including the Winter Soldier. He sells some of these devices to the highest bidders to raise funds. In one instance, he sells weapons to the Red Skull himself, but refuses to part with the Winter Soldier for anything less than the reality-altering Cosmic Cube (which the Skull was not in possession of, and would not give up in any case).