Earth-Twenty was a pre-Crisis universe without a Superman, briefly visited by the Superman of Earth One where he became a disk jockey on radio station WMET, having to deal with both Lois Lane and a woman named Liza Landis who suspected his identity as Superman before he returned home to Earth-One.
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- No trivia.
- Characters from Earth-Twenty
- Other things related to Earth-Twenty
- Earth-Twenty's Comic Appearances
- Reality Gallery: Earth-Twenty
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