Johann Schmidt (Earth-1955)

Colonel Johann Schmidt, better known as the Red Skull, was a mystic and occultist, as well as the first leader of HYDRA that managed to infiltrate the Nazi German leadership during World War II. Schmidt was the first super soldier, being the original subject to the Super Soldier Serum of Abraham Erskine, and sought to use the Tesseract to create an inter-dimensional portal to unleash beings from other worlds and dimensions. After being killed by Captain America in the final year of the war, Skull was resurrected through black magic by Madame Hydra and Iron Cross 70 years later to continue their plans.