Ironclad

Ironclad is a Marvel Comics character who appeared in The Avengers: Earth's Mightiest Heroes, and in Avengers Assemble, voiced by Eric Ladin. He is an HYDRA scientist who was exposed to gamma radiation during a trip to space, The gamma radiation mutated him, turning his body into iron and giving him superhuman strength and invulnerability. He uses these powers to fight the Avengers as a member of the U-Foes. Ironclad is gruff, antisocial and agressive.