your dog might even be a cat in this universe! Normally in a stock TV show episode, the main character gets stuck in this universe or vice versa. This is a very popular stock alternative universe for fanfics and fan art.
- One of the special chapters of ARIA took place in an alternate universe where Undines are a male only profession. President Aria somehow got stuck in this universe and spent the whole day dealing with opposite sex versions of the whole cast.
- Maid-Sama!: "The Student Council President is a Butler!" omake flips everyone's gender.
- In Spirit Circle, looks like this is where Fuuko lives. Her life is explicitly stated to take place in an alternate universe of Fuuta's life, and she's the only one of his incarnations who is female. It also shows us her version of Fuuta's friends, all of which are also the opposite gender of their other incarnations.
- Urusei Yatsura: In one anime-original episode, Lum gets transported into a dimension where she briefly meets Gender-bent versions of Megane, the rest of the Lum stormtroopers, Ryuunouske and her(his) father(mother).
- One arc of The Authority saw the team visit an alternate universe where everyone had the opposite gender of their counterpart in the main Wildstorm universe, and where gender roles were reversed. Jack Hawksmoor walked away disturbed at the sight of his counterpart being heavily pregnant.
- In The Multiversity, the DC Universe's Earth-11 is basically "Earth-Gender Flip", with all the major characters swapped. Most of them are gender-flipped versions of existing characters, but some play with the concept in some way, eg Batwoman is still Kate Kane, but in Batman's position; the Green Lantern counterpart is Star Sapphire, but her real name is Carol Jordan; and The Flash counterpart is Jesse Quick. And Jesse's sidekick Kid Quick is nonbinary.
- The concept of a genderbend universe first appeared in Superman #349 (July 1980), which was created by Mr. Mxyzptlk to trick Superman into thinking he somehow ended up in another universe. It ends up failing because Superwoman and Clara Kent exists as separate people (and found that Mxy is still male in this world).
- In Web Warriors, one of the alternate universes is a world where everyone's gender, name, and moral alignment is opposite of their Earth-616 counterpart. It is the home of Octavia Otto.
- Exiles had this show up from time to time, though typically as one offs where the team jaunted through for a couple panels but didn't have a great deal of plot relevance.
- The Star Trek (IDW) storyline "Parallel Lives" featured an alternate universe in which Jane T. Kirk was captain of the Enterprise, with her crew including Ms Spock, Dr Lea McCoy, Nnamdi Uhuro, Marjorie Scott, Jason Rand, Hiraki Sulu, Pavlovna Chekov, Carl Marcus, and so on. Jane reappears, along with many other alternate Kirks, in "IDIC".
- On a Cross and Arrow has one such universe parallel to Equestria. The mane six are sent there by a spell gone awry, and spend most of the story hiding from their male counterparts.
- The X-Men: Evolution fanfic XXY:Evolution has most of the characters with opposite genders. The notable exceptions are the younger X-Men's parents, Sabretoothnote , Irene Adler, Tony Starknote , and Spider-Man and his supporting cast.
- In Brothers of Thunder, a spin-off to Infinity Crisis, Thor and Jane Foster of Earth-19999, along with their counterparts from The Avengers: Earth's Mightiest Heroes! and Avengers, Assemble! (including the Avengers from the latter series), end up in one designated Earth-911111.
- In the book series "The Magical States of America", there is an alternate universe where every person from "our" universe has a gender-swapped counterpart in a world that runs on magic instead of science.
- The Twilight one-shot book Life and Death: Twilight Reimagined is set in an alternate universe where the major characters are genderflipped; Bella Swan becomes Beaufort Swan, Edward Cullen becomes Edythe Cullen, Jacob Black becomes Julie Black, etc. Not everyone is genderflipped, though; Beaufort still moves to Forks to live with his father after his mother remarried.
- The Malcolm in the Middle episode "If Girls Were Boys" deconstructs this: while Lois fantasizes about how the problems would be far less common if she had all girls instead of boys (when she was pregnant with Jamie), by the end she realizes that both genders have their problems—if she had girls, she might wish they were boys instead.
- The Red Dwarf episode appropriately titled "Parallel Universe" featured gender-bent versions of most of the main characters (except for the cat; his parallel-universe equivalent was a dog). Also, in this parallel universe, men are the ones that can get pregnant, resulting in women being the dominant gender (Wilma Shakespeare was the most famous writer in that universe, while Nellie Armstrong was the first person to walk on the moon). However, the gender gap has closed since the 60s thanks to the efforts of masculists like Jeremy Greer.
- Sliders: The antagonist of the episode "Double Cross", Logan St. Claire, is revealed towards the end to be the double of main character Quinn Mallory. This is their first time encountering such a situation, as the Sliders' doubles have typically been just that, doubles.
Quinn: That's impossible. How can my double be a woman?
Arturo: It is the difference between an X- and Y-chromosome, Mr. Mallory.
- Red Panda Adventures: In "The World Next Door", the Red Panda and Flying Squirrel meet Baboon MacSmoothie, a traveler from an alternate timeline's future, there to steal something from the past without causing a paradox. During his visit, it's learned his world is vastly different from the main universe. Among other things, the Flying Squirrel was a teenage boy named Kent Baxter, rather than an adult woman named Kit Baxter. Kit tells the Panda that "Kent" would have been her name had she been a boy. A later reference to this world mentions a male villain called the "Necromator", who the Red Panda assumed is a gender flip of one of his own Rogues' Gallery villainess, Professor Zombie.
- Implied in Super Munchkin with the "alternate dimension version" card, which changes the sex of a player character.
- A staple of the Fate series, which features genderbent versions of popular figures from history, folklore, and urban legend. Despite this, the trope is inverted with its signature character, Artoria Pendragon— our universe's "Arthur" is a female, but the male Arthur comes from a parallel world.
- Shovel Knight has Body Swap Mode, which does this for every character in the game.
- Eddsworld had the episode "Mirror Mirror" in which there was a world with female versions of the main cast connected by Matt and Matilda's mirrors.
- Ennui GO! features a short run of strips in a gender-flipped alternate universe. The characters' roles and personalities were generally unchanged, although the feminine version of Noah had gigantic Gag Boobs instead of the regular Noah's Gag Penis, and the male version of Sarah had a thick mustache.
- Parodied in Val and Isaac.Val quickly got fed up of being "Girl Val" when the other Vals got together to solve a crisis (the other characters have a more or less even gender ratio across the multiverse).
- Adventure Time has a gender-bent universe that is the main setting of Ice King's stories. Examples include Fionna, a gender-bent Finn, and Cake who is a female cat that is the counterpart of Jake the Dog.
- Johnny Test: The episode "Johnny Alternative" revolves around Johnny and Dukey being sent to an alternate universe where everyone, including the duo, is the opposite gender (Johnny Test -> Joni West, Dukey -> Duchy, Eugene -> Eugenia, Susan Test -> Simon West, Mister Mittens -> Madame Mittens, etc.)
- Subverted in The Loud House episode "One of the Boys", where there seems to be a world where the Loud girls have turned into boys, Clyde, and Bobby into girls, and eventually Lincoln into a girl, but it turns out to be All Just a Dream.
- SheZow has Gal/DudePow, a Distaff Counterpart of Guy / SheZow from a alternate universe. There are also other characters in that alternate universe who are gender-flipped as well.
- In Ultimate Spider-Man, Spider-Man travels to an alternate universe where all the characters are gender-flipped. He meets his female counterpart, Petra Parker. This version of Earth is seemingly matriarchal, with Peter given a Stay in the Kitchen attitude from Petra. They still manage to work together to fight both his Green Goblin and her Green Goblin.