Note:This entry assumes that Shift was a codename adopted by Yera Allon. However, it is possible that she was another Durlan altogether.
Little is known of the life and actions of Yera Allon, Durlan wife of Gim Allon (the former Colossal Boy), following the period known as the 'Five-Year Gap' that followed the Magic Wars. She attended the reunion of Legionnaires on the planet Winath, incidentally revealing her husband's apparent taste for having her use her power to masquerade as various of his former Legionnaire colleagues for sex.
Later, Yera (or possibly a different female Durlan of very similar appearance) appeared using the codename 'Shift', as a member of the United Planets Military Academy under the leadership of Chuck Taine and Luornu Durgo.