Earth-404 was an alternate world in which Superboy lost his powers at age 16.
- Born to Be Superman! was originally published as an imaginary story, a story outside of regular continuity. In Crisis on Infinite Earths: The Compendium, it was retconned as having happened on another Earth, .
- No trivia.
- Characters from Earth-404
- Other things related to Earth-404
- Earth-404's Comic Appearances
- Reality Gallery: Earth-404
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