Brief History
The actor was a master of disguise who could impersonate anybody. He was a Soviet Agent who volunteered for stealing designs of Tony Stark. He had the real Stark summoned to Washington, DC for a bogus meeting. Then used the Stark identity to steal the plans. While searching for them, the Actor found evidence that Stark and Iron Man were the same person. He was the first to figure it out.
He was on his way to homebase when Iron Man caught up to him and left him restrained. He escaped his bonds and rushed to base. Only to find Stark had framed him for stealing the blueprints from the Barbarian’s hands. He was executed for treason. His protests that he knew Iron Man’s secret identity were dismissed as a mere “fairy tale” by his superior.