A Starfleet scientist who developed the Genesis device and is the mother of David Marcus.
Carol Marcus is a scientist who appears in the Star Trek films, and she is best known as a leading mind behind the Genesis project in The Wrath of Khan. She is a thoughtful and principled researcher who believes her work can create life, and she soon finds that others have darker plans for it.
Her past with James T. Kirk is an important part of her story, since the two once had a relationship and share a son, David Marcus. The film reveals that Kirk is David's father, and the revelation adds personal stakes to the conflict with Khan. David's later fate deeply affects both of them. A younger version of Carol also appears in the rebooted film series, where she is a weapons expert aboard the Enterprise.
Carol is remembered as an intelligent and courageous scientist who stands up to those who would misuse her research.