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Demographic-Dissonant Crossover

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"Speaking of brands, how exactly is my brand going to mesh with a kids game? I'm Deadpool! I hack off limbs and blow people's brains out! I've been sodomized by Inara from Firefly. I drop more F-Bombs than a face-blind Tourette's patient yelling at his own reflection in the mirror."
Deadpool, questioning how an adult character like him could work in Fortnite, Deadpool Tries Joining the MCU

When a franchise meant for an older demographic with copious amounts of swearing, erotica, violence and gore, and other such mature nastiness that isn't for children to witness crosses over with another franchise meant for a general audience with hardly any of those things, it results in the creation of a Demographic-Dissonant Crossover.

To avoid controversy from Moral Guardians, the adult-oriented property is often Bowdlerised. Though the reverse also tends to be true, where the child-oriented property is made Darker and Edgier or Ruder and Cruder to Avoid the Dreaded G Rating. However, this may result in fans of the edited property being alienated by the changes.

This is also quite common in Fan Works, as the world of fanfiction gives aspiring writers the ability to combine whatever franchises they are fans of without copyright or trademark concerns as long as the fanfiction creator doesn't profit from the fan works nor deprive the creators of the original works of revenue. Fan works, naturally, do not have to worry about adhering to network standards, and can make the child-oriented properties as "adult" as they wish to a certain degree, without attracting lawyers from the creators of the original properties, who may fear that the fan works could ruin the reputation if they become sufficiently popular and later implement a Fanwork Ban.


Note that if a work happens to be suitable for children but is targeted to an older demographic and has official crossovers with works not suitable for children, such as the Brave New World expansion for the E10+-rated Civilization V featuring the XCOM Squad from the M-rated XCOM: Enemy Unknown, it does not count. There's a reason why this trope isn't called Age-Rating-Dissonant Crossover.

Compare and contrast Misaimed Marketing and Story-Breaker Team-Up. A Sub-Trope of Weird Crossover. A Super-Trope to "Sesame Street" Cred, specifically in the cases creators of adult-oriented media make a cameo on a kids' show, and So My Kids Can Watch when those creators make a cameo on a kids' show to show to their own children.



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  • This Kids' WB! promotion crosses over Pokémon with... 7th Heaven of all things, which wasn't even on Kids WB.
  • In the 90s Fox Kids held an event promoting the adult animated series King of the Hill, complete with animated crossover bumps featuring the King of the Hill cast interacting with characters from Fox Kids series. Here is a bump where Hank tries to sell propane to the Silver Surfer.

    Anime & Manga 

    Comic Books 

    Fan Works 


    Live-Action TV 
  • "The Stolen Earth"/"Journey's End", the two-part finale of Doctor Who Series 4, was a Crisis Crossover between the parent series, a family show, and contemporary spin-offs Torchwood, which was very much adult-themed, and The Sarah Jane Adventures, which aired on a children's TV channel. "The Stolen Earth" highlights the differences the spin-offs when Sarah mentions that she tries to avoid the Torchwood team on account of them carrying "too many guns", nodding to her teenage son as she does so. Far from offended, Captain Jack cannot resist flirting with her and she seems to appreciate his compliment.
  • The adult live-action horror TV series Supernatural had a crossover episode with the children-oriented Scooby-Doo, Where Are You!, with Sam and Dean Winchester being sucked into an enchanted television and assuming animated form. The episode was tonally very much adult-oriented, with the Scooby-Doo characters being horrified to encounter genuinely supernatural events and actual murder.
  • Sesame Street is aimed at kids of preschool and early elementary school age, but there have been a few appearances of characters from works for older people:
    • Three skits (one about the letter W, one about body parts, and one about brushing teeth) featured characters from Happy Days (Fonzie was in all three and Richie also featured in the tooth-brushing skit). While Happy Days isn't an adult show, it contains risque jokes that make it more suitable for around middle school age and up.
    • One skit involves the characters C-3P0 and R2-D2 from Star Wars visiting. Star Wars is kid-friendly, but is a bit too violent for kids that young; it's more suitable for ages seven and up.
    • The remake of the song "Monster In The Mirror" features many celebrities who were very popular at the time the song was produced, including an appearance from The Simpsons, which is a series MUCH too adult for Sesame Street's audience of children.
    • A particularly noteworthy example of this trope is a Game of Thrones skit where Elmo asks Cersei and Tyrion Lannister to be more respectful and work with others. Game of Thrones is a show that's way too inappropriate for young kids watching Sesame Street since the former series is filled with violence (though not particularly Gorny), foul language and especially sexual content.
  • Blue's Clues & You!, being a reboot of the original Blue's Clues series, is intended for the Nick Jr. audience of young children. So having an appearance from Samantha Bee on her immensely raunchy late-night political comedy series Full Frontal with Samantha Bee is VERY jarring.

  • The German version of MAD had numerous cases of this with its pages covering animated media, such as the general audience-aimed SpongeBob SquarePants with the adult-oriented Happy Tree Friends (the issue of which is pictured above). In general, while most of its pages about animated media include only family-friendly media, they tend to feature a decent amount of slapstick gore, as well as occasional sexual content.

    Theme Parks 

    Video Games 

    Web Animation 


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