: 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..
- Downplayed: The members of Hero Inc. accidentally get stuck in the universe of Jerkass Inc..
- Justified: 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.
- Every single citizen on Villain Inc's universe is evil and has a beard— 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 Face-Heel Turn and became Villains Inc. Heroes Inc. never finds out about the mirror universe that now actually exists.
- Averted: There is no Mirror Universe. That was easy.
- Enforced: "We need to show what might happen to the heroes if they weren't goody two-shoes, so create a Mirror Universe."
- Lampshaded: "Oh, no. A Mirror Universe. This is worse than one where the Nazis win World War II."
- Invoked: "If my calculations are correct, we should arrive in the Mirror Universe."
- Exploited: The heroes purposefully travel to a Mirror Universe 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 Mirror Universe! Let's get out of here before something plot-related happens!"
- Discussed: "This world looks like something the people of a Mirror Universe would love to inhabit."
- Conversed: (putting away a comic book), "Why does every single comic book company have a Mirror Universe? I gotta check Wikipedia to see if Paramount owns every single comic book company."
- Deconstructed: Heroes Inc. find that they're Not So Different 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.
The evil twin of TV Tropes
, ustr:\\TVCliches.soc, wants you to visit the Mirror Universe