Crimson Dynamo is the name of several armored supervillains in Marvel comics.
Anton Vanko was a Russian scientific genius who specialized in electromagnetism. He created the Crimson Dynamo suit, which was as powerful as Iron Man's, and could project electric blasts. The Soviet government hired him to sabotage Stark Industries, which he attempted twice, both times being defeated by Iron Man. He later defected to the USA when he learned that the Soviet government planned on killing and replacing him. He was then hired by Stark and worked alongside him.
Boris Turgenov became the second Crimson Dynamo and, along with Black Widow, hunted down Vanko with his Dynamo suit, but both were killed in an explosion.