The Leader (Marvel Cinematic Universe)

Doctor Samuel Sterns is a cellular biologist and Grayburn College professor who was finding a cure for Bruce Banner. Sterns managed to engineer a temporary antidote for Banner's condition but was also forced to repeat this process with Emil Blonsky, transforming him into the Abomination. When he was affected by Banner's blood on his head's open wound, his mind suffered a rapid mutation, greatly increasing his mental abilities. However, Natasha Romanoff arrived and subdued him, handing him into S.H.I.E.L.D.'s custody.