Ivan Vanko

Ivan Vanko (b. February 15th, 1968) (d. August 1st, 2010) was the son of Anton Vanko, the co-creator of the arc reactor alongside Howard Stark, and a Russian physicist himself. After watching his father suffer due to having been deported back to the USSR for trying to sell the plans for the arc reactor on the black market, culminating in his death on November 25th, 2006, Ivan decided to get his revenge by going after Howard's (assumed/adopted) son, Tony Stark. This resulted in him being hired by Justin Hammer, a rival of Tony's through being the CEO of his company, Hammer Industries.
Using the resources that Hammer Industries gave him, Ivan made the drones that were used in his attack of Los Angeles (and the Stark-Wayne Family) on August 1st, 2010. As like with canon, this attack was ultimately stopped by Iron Man and War Machine and resulted in Ivan's death.