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Nasthalthia Luthor (Earth-One)

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Nasthalthia "Nasty" Luthor was the niece of criminal mastermind, Lex Luthor. She was at first a friend, but later an enemy, of Supergirl. She is one of the few to ever discover Supergirl's secret identity.

  • This version of Nasty Luthor, including all history and corresponding appearances, was initially erased from existence following the collapse of the original Multiverse in the 1985-86 Crisis on Infinite Earths limited series. However the ending of Convergence retroactively prevented that collapse saving all the alternate realities though in an "evolved" form. Even though versions of the character may have since appeared, this information does not apply to those versions.
  • Though her relationship to Lex Luthor was never explained in any story, Mike Sekowsky explained it in the letters page of Adventure Comics #401. Nastalthia is the daughter of Lex's older sister who eloped to Europe as a teenager, and their parents never spoke to her again out of disapproval.


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This character is or was primarily an enemy of Superman in any of his various incarnations, or members of the Superman Family. This template will categorize articles that include it into the "Superman Villains category."

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