'''Basic Trope''': A universe in which the heroes are the villains and the villains are heroes.
* '''Straight''': The members of Hero Inc. accidentally get stuck in the universe of Villain Inc..
* '''Exaggerated''':
** [[BizarroUniverse In this universe,]] [[OppositeDay everything is reversed,]] [[BizarroUniverse from color schemes to gender, and even personalities.]]
** A mirror version of TheMultiverse.
* '''Downplayed''': The members of Hero Inc. accidentally get stuck in the universe of {{Jerkass}} Inc..
* '''Justified''': [[GodwinsLawOfTimeTravel Someone messed with time travel and accidentally created a universe where earlier villains won before the heroes or villains were born.]]
* '''Inverted''': Villain Inc. invades Hero Inc.'s universe.
* '''Subverted''': At first it seems like they stumbled onto an alternate universe, but it turns out to be a cosplay convention.
* '''Double Subverted''': Then they walk outside and discover it really is an alternate universe.
* '''Parodied''':
** Every single citizen on Villain Inc's universe is evil and has a {{beard|OfEvil}}-- even the females.
** Everything is reversed even what a reverse is meaning there is no difference
* '''Zig Zagged''': Heroes Inc. are not in a mirror universe; it's a mind game being played by another villain. But the mind game creates a tear in the space-time continuum, which creates the mirror universe, where the heroes made a FaceHeelTurn and became Villains Inc. Heroes Inc. never finds out about the mirror universe that now actually exists.
* '''Averted''': There is no MirrorUniverse. That was easy.
* '''Enforced''': "We need to show what might happen to the heroes if they weren't goody two-shoes, so create a MirrorUniverse."
* '''Lampshaded''': "Oh, no. A MirrorUniverse. This is worse than one [[GodwinsLawOfTimeTravel where the Nazis win World War II]]."
* '''Invoked''': "If my calculations are correct, we should arrive in the MirrorUniverse."
* '''Exploited''': The heroes purposefully travel to a MirrorUniverse to get resources that less moral versions of themselves have access to, or to recruit good counterparts of their own universe's Villains Inc.
* '''Defied''': "Damn it, we're in the MirrorUniverse! Let's get out of here before something plot-related happens!"
* '''Discussed''': "This world looks like something the people of a MirrorUniverse would love to inhabit."
* '''Conversed''': (putting away a comic book), "Why does every single comic book company have a MirrorUniverse? I gotta check Wikipedia to see if Paramount owns every single comic book company."
* '''Deconstructed''': Heroes Inc. find that they're NotSoDifferent from their "evil" counterparts, leading them to question their own motives and actions.
* '''Reconstructed''': . . .but, unlike their counterparts, they realize their wrongdoings and ultimately become better people for it.
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The evil twin of TVTropes, [= ustr:\\TVCliches.soc=], wants you to visit the MirrorUniverse.
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%% Optional items, added after Conversed, at your discretion:
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%%* '''Implied''': ???
%%* '''Plotted A Good Waste''': ???
%%* '''Played For Laughs''': ???
%%* '''Played For Drama''': ???