* GrowingTheBeard: Arcturus Rann, literally, when he [[spoiler: sacrifices part of the his artificially-maintained youth to recreate Biotron.]]
* TheyWastedAPerfectlyGoodCharacter: Huntarr wasn't under any licensing restrictions barring him from usage as he was created by Bill Mantlo for Marvel Comics. Given his extensive character development and excellent relationship with the other Micronauts, the fact that he didn't return with Rann, Mari and Bug is puzzling.
** The entire notion of the Microverse has been laying fallow for many years in Marvel: even if they have to write around trademarks, you'd think they'd take more advantage of this science-fiction setting existing literally just under the noses of their regular universe. Reed Richards is known to have the technology to shrink objects past the barrier: it's a surprise that he didn't employ it in ''Civil War'' as an alternative to the Negative Zone.
*** When [[ComicBook/CaptainMarVell Genis Vell]] and Rick Jones were sharing a body, they would swap places between Earth and the Microverse. Rick had had a similar arrangement with Mar Vell years earlier, except they swapped between Earth and the Negative Zone.
*** The Microverse was used to explain TheWasp's return from apparent death, recently. When she realized she was about to die, she panicked and shrank down further than she ever had before, popping out in the Microverse. It's a [[AuthorsSavingThrow better explanation]] than most [[ComicBookDeath comic book resurrections, honestly.]]