4. Titanium Man
There are two characters named Titanium Man in the Marvel comic book universe, but we'll be focusing on the first one - Boris Bullski - in this particular instance. Bullski would make an interesting movie villain due to both his incredibly powerful suit and his links to other characters who have already appeared in the Marvel cinematic universe. A former KGB member, Bullski used to be Black Widow's (Natasha Romanoff's) combat instructor in her days as a Russian spy. He was an ambitious official of the Communist Party of the Soviet Union, buti was demoted after displeasing his superiors. While he was working as an administrator of a Siberian labor camp, he commissioned the imprisoned scientists at the camp to build a suit of armor using the lab of Anton Vanko, the creator of the original Crimson Dynamo armour (the character who was reimagined as Ivan Vanko and played by Mickey Rourke in Iron Man 2). In order to win back the Communist Party's favour and trust, Bullski came up with the idea of winning a propaganda victory against the West by defeating the American superhero Iron Man. That is where he could come in to Iron Man 4. Bullski himself possessed enhanced strength due to treatments he received from the Soviet Government, making him a threat even unarmed, while his green armour possessed superior strength to that of Iron Man's, can fly at supersonic speeds and reach escape velocity. Weaponry comes in the form of concussive force blasts from the hands, project constrictive force 'rings', and an electromagnetically paralytic beam which fires from the helmet.