Mesmalatu was a cleric of Lissala and the ambassador between the Thassilonian realm of Shalast and Runelord Karzoug's allies from Leng, who converted to the worship of Nyarlathotep and became a demilich after Earthfall.1
During Earthfall, as the Kodar Mountains erupted and sent a pyroclastic flow on Guiltspur's direction, Mesmalatu, the denizens of Leng, and moon-beasts followed the planar connection from Guiltspur to Leng for safety. As the lava engulfed and buried Guiltspur, the portal was broken, and Mesmalatu stayed behind with her allies to learn their secrets; during this time she became a lich.3
During the Age of Darkness, Mesmalatu and her allies built a new planar link that connected Guiltspur to a temple of Nyarlathotep in Leng. Upon returning, she was satisfied that Karzoug was no longer there, as she could now freely use Guiltspur's resources without being bothered by him.3
For many thousands of years, Mesmalatu used Guiltspur as a private laboratory along with her allies, and converted to the worship of Nyarlathotep. As her final experiments took place, the Leng side of the portal was captured by Leng spiders, and in return Mesmalatu closed the portal. She soon fell into a long torpor and became a demilich.3
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- Richard Pett. (2012). Into the Nightmare Rift. Into the Nightmare Rift, p. 41. Paizo Publishing, LLC. ISBN 978-1-60125-487-0
- Richard Pett. (2012). Into the Nightmare Rift. Into the Nightmare Rift, p. 48. Paizo Publishing, LLC. ISBN 978-1-60125-487-0
- Richard Pett. (2012). Into the Nightmare Rift. Into the Nightmare Rift, p. 7. Paizo Publishing, LLC. ISBN 978-1-60125-487-0