Lalandra 12th was the daughter of Lalandra 10th, and elected Imperial Sovereign of the New Shi'ar Imperium in Year 9125 by the Imperial Council at the age of 100. She relied on both her mother and her aunt the former Sovereign Lalandra 11th as political advisors.

She resigned in Year 9416, but served as an advisor to her own son, Torr 18th, after he was elected Sovereign by the Imperial Council.

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