Elizabeth Weir

Accomplished & acclaimed American diplomat
2004: Assume civilian commander of Stargate Command
Later that year, she was given command of the Atlantis expedition in the Pegasus Galaxy
2007: Physical body died, consciousness was assimilated by the Asuran collective
Lead the remnants of Niam's faction in their quest for ascension
2008: Returned to Atlantis to seek help after a failed attempt at Digital Ascension;
Sacrificed herself to freeze the others Asurans in the cold of space
2009: Briefly ascended by the Ascended Asgard Ran before being "unascended" later
2010: Allowed to return to working with the expedition by the IOA, but not as a leader