Lalandra V was a cousin of Torr 12th, elected by the Imperial Council as Imperial Sovereign in Year 6199 of the New Shi'ar Imperium's official calendar, the New Shi'ar Calendsr, eleven years after her cousin and the New Council were overthrown in an Imperial Guard coup.

She sincerely attempted to reconcile the increasingly restive members of non-Shi'ar races to rule by the Imperium, but with only limited success. She did, however, strictly limit the influence of the Fist of the Shi'ar People within the government of the Imperium.

She abdicated in Year 6225, and served as a leading political advisor to her daughter and successor, Lalandra VI.