On this Earth, the use of mutant powers had physical side effects. For most mutants it resulted in farting, though a few exceptions existed.
- Prior to being given an official reality number, this universe was known as Earth-TRN190 as part of our Temporary Reality Numbers classification system.
- Characters from Earth-21110
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- Earth-21110's Appearances
- Earth-21110's Minor Appearances
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- Reality Gallery: Earth-21110