Lena Thorul-Colby was the younger sister of Alexis "Lex" Luthor.
She was a toddler when her brother became a notorious criminal mastermind in his teenage years. Lex and Lena's parents were so ashamed of their son's crimes and reputation that they moved away from their home in Smallville with Lena and changed their surname to "Thorul"-- an anagram of "Luthor". Lena grew up with no knowledge of the fact that she had a brother who had become the arch-nemesis of Superman.
- This version of Lena Thorul, including all history and corresponding appearances, was erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. Even though versions of the character may have since appeared, this information does not apply to those versions.
- 27 Appearances of Lena Luthor (Earth-One)
- 3 Images featuring Lena Luthor (Earth-One)
- Quotations by or about Lena Luthor (Earth-One)
- Character Gallery: Lena Luthor (Earth-One)