The 12th Baron Zemo, Heinrich Zemo is depicted as one of the top scientists in the Nazi Party. Zemo fought both Captain America and his allies the Howling Commandos during World War II. A brilliant and sadistic scientific genius, Zemo created many weapons of mass destruction for Hitler's army. In an attempt to regain a level of anonymity, Zemo began wearing a reddish-pink hood over his face as he continued to build weapons for the Nazis. His activities ultimately drew the attention of Captain America, resulting in a confrontation just as Heinrich was ready to unveil his newest scientific breakthrough: Adhesive X, an extremely strong adhesive that could not be dissolved or removed by any known process at the time. It was only after the war that the adhesive-using villain Paste-Pot Pete found a way to neutralize it. The 13th Baron Zemo, Helmut J. Zemo, the son of Heinrich Zemo, then followed in his father's footsteps, battling Captain America many times to avenge the killing of his father. Helmut was then responsible for bringing back the Masters of Evil and then forming the Thunderbolts. He still remains the current Baron Zemo.
