Subcommander T'Lorra was a member of the Romulan Star Navy, serving in the late 24th century. Following the Archein invasion of the Romulan Star Empire in 2384, she was assigned as an observer aboard the USS Odyssey (NCC-81302) during its mission to the Andromeda galaxy. When many of the Odyssey's crew were killed, including the captain and executive officer, T'Lorra was appointed acting first officer under Lt. Commander Ro Nevin. (Star Trek: Odyssey: "Iliad")
During the Odyssey's sojourn, T'Lorra earned the trust of the crew, and formed an unusual kind of friendship with Security Chief Maya Stadi. She and Dr. Matthew Vaughn also became wary comrades, thanks to their similar pasts as intelligence operatives.