Moira MacTaggert is a fictional character in the Marvel Comics universe, primarily associated with the X-Men. She is a geneticist and a key figure in the study of mutants, possessing a deep understanding of their biology and abilities. Moira is known for her intelligence and dedication to mutant rights, often working alongside characters like Professor X. One of her unique traits is her ability to reincarnate after death, retaining the memories of her past lives. This power allows her to influence events in the X-Men storyline significantly, as she seeks to create a better future for both mutants and humans.