Dr. Elizabeth Weir, Ph.D is a human diplomat and first commander Earth's expedition to locate and study the Ancient city of Atlantis in the Pegasus Galaxy. She speaks over five languages, including Russian and Latin (the later of which assisted in her learning of Ancient). Weir brokered a dozen of the most sensitive international treaties in modern times, a résumé that would lend itself very well to critical negotiations once the expedition was cut off from home. Though her inclination was always to seek a diplomatic solution to conflict, she ultimately realized that this is not always possible when facing ruthless enemies such as the Wraith and the Asurans—enemies who threaten human existence itself. But she has had more success with others, including the Genii.