In this episode, we meet not one but two important new characters! It’s the first appearance of the villain who would go on to be one of Captain America and the Avengers’ toughest foes. But before he led the Masters of Evil, Baron Zemo got his start as Dr. Zemo, a Nazi scientist who has invented a death ray that could win the war for the Third Reich! So the Howling Commandos are sent to stop Dr. Zemo, and they’ve got the newest Howler in tow—meet the very British Percy Pinkerton!