Dr. Elizabeth Weir is a fictional character from the science fiction television series Stargate SG-1 and its spin-off, Stargate Atlantis. She is portrayed as a highly intelligent and capable leader, serving as the head of the Atlantis expedition. Dr. Weir is known for her diplomatic skills and her ability to navigate complex intergalactic relationships. In addition to her leadership role, Dr. Weir is a trained psychologist and has a strong background in science and research. Her character often faces moral dilemmas and challenges, balancing the needs of her team with the broader implications of their missions in the Pegasus Galaxy.