John Sheridan's wife in the Babylon 5 universe. Was presumed dead after the Icarus, a research ship she was on, had an accident on Z'ha'dum. Was later found to have been altered by the Shadows there and put to work as a living CPU inside one of the Shadow vessels. After the Shadows realized who she was, they removed her and injected her with a new personality to try to get John to go to Z'ha'dum.