DC Database
The subject of this article has been mentioned only and never actually shown in a comic book or on-screen. Despite their lack of physical appearances, information about them might still be relevant or interesting or at least worthy of documentation. Anything known about them is to be considered second-hand information.

Alexandra Luthor of Earth 24 fought Superman using a "decibel drill".

Alexandra Luthor was the arch-nemesis of her Earth's resident Superman. One attempt to defeat him involved a "decibel drill" to exploit his super-hearing. However, he learned how to turn that ability off, which he taught to the Superman of Earth 23.[1]


  • "Decibel drill"



Superman Villain(s)
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This character has been 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."