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* A few of the AbridgedSeries' have crossovers. Examples include Ghost Nappa appearing in a ''WebVideo/YuGiOhTheAbridgedSeries'' video, and Yami Yugi appearing at the end of the ''[[WebVideo/DragonBallAbridged Dragon Ball Kai Abridged]]'' video.
* The feud between WebVideo/TheAngryVideoGameNerd and WebVideo/TheNostalgiaCritic.
** The Critic's [[Website/ChannelAwesome website]] decided to run it to the ground [[http://thatguywiththeglasses.wikia.com/wiki/Cameos quite often]], starting with the MassiveMultiplayerCrossover [[WebVideo/TGWTGYearOneBrawl brawl]] [[http://thatguywiththeglasses.com/videolinks/thatguywiththeglasses/nostalgia-critic/6719-1-year-anniversary-video celebrating TGWTG's first anniversary]]. Many of the crossover reviews are shot during production of the [[WebVideo/{{Kickassia}} other]] [[WebVideo/SuburbanKnights anniversaries]] or conventions where many are reunited (most notably [=MAGfest=]).
** Not only does [[WebVideo/TheSpoonyExperiment Doctor Insano]] end up in [[WebVideo/AtopTheFourthWall Linkara's]] videos often, he first appeared in one.
*** [[WebVideo/YuGiOhTheAbridgedSeries Bandit Keith]] also appears in a few of Spoony's videos, portrayed by Creator/LittleKuriboh.
** The ''WebVideo/EightiesDan'' Christmas special had a crossover with other characters created by Creator/BradJones.
* The Fanfic/AntiClicheAndMarySueEliminationSociety actually uses Crossovers as a gadget. It can temporarily fuse two fandoms together, but it isn't used all that often.
* Podcasts ''Podcast/ArsParadoxica'' and ''Podcast/TheBrightSessions'' have a crossover episode called "The Intrusion."
* Via Patreon ''Podcast/CanceledTooSoon'' had one with ''LKTV'', reviewing the new Hallmark Channel Christmas movies released that July.
* ''WebVideo/CawCophony'' collaborated with WebVideo/LyzetteG for their Best Hit Songs of 1973 list.
* ''Franchise/FinalFantasy'' + ''VideoGame/DeadOrAlive'' = ''WebAnimation/DeadFantasy''
* On June 27, 2020, Simon A. and Derrick [=McCormick=] collaborated to make a [=YouTube=] crossover special between ''WebVideo/BabyLambAndFriends'' and [[https://www.imdb.com/title/tt9787614/ ''Derrick [=McCormick=]'']], titled [[https://www.youtube.com/watch?v=zPjaa6WPv-4 ''Derrick [=McCormick=] & Friends'']].
* ''WebVideo/EpicMealTime'' has had several, including the likes of Music/{{deadmau5}} and WebVideo/{{SMOSH}}.
-->'''Ian''': So I heard you ordered the collabo.\\
'''Harley''': I hate these guys!\\
'''Anthony''': Yeah, we hate you, too. This is for the children. [[ThinkOfTheChildren Think about the kids]].\\
'''Ian''': Yeah. C'mon, asshole.
* Crossovers and cameos are part and parcel of how the reviews work on Website/ChannelAwesome, in that at least twice a year per show someone from another show on the site makes an appearance.
** In addition to this, other internet personalities make appearances from time to time, like Creator/TeamFourStar, Music/{{Brentalfloss}}, [[WebVideo/TheSpoonyExperiment Spoony]] (he counts, since he's not officially part of the site anymore), and others.
* ''WebVideo/HeroHouse'' is essentially a giant crossover between all pop-culture franchises.
* ''WebAnimation/HowItShouldHaveEnded'' gives their take on how the Franchise/{{Terminator}} series [[https://www.youtube.com/watch?v=bBBw9E2Q_aY&feature should end]]. With an [[Franchise/BackToTheFuture unexpected crossover]].
* ''WebAnimation/EverythingIsBroken'': It mixes ''WEBANIMATION/HappyTreeFriends'' with ''WESTERNANIMATION/MyLittlePonyFriendshipIsMagic'' {{creepypasta}}s.
* ''WebVideo/ImAMarvelAndImADC''.
* ''WebVideo/{{lonelygirl15}}'' crossed over with ''[=OpAphid v. Tachyon=]'' in season one and ''WebVideo/KateModern'' in season three.
* ''Literature/TheNeverkindSaga'' is a crossover between ''Literature/TheKindnessOfDevils'' and ''Literature/TheNeverMythos''. This wasn't made canon until the end of ''Literature/AndToAllAGoodNight'', where Eliza from ''Never Mythos'' has a cameo at the end of the story. The crossover was made official with the first story in ''The Lonely Dreams Cycle''.
* The fifth episode of ''WebVideo/NonePiece'' is a crossover with ''WebVideo/CodeMENT'' (both are made by Purpleeyeswtf and has the sub-title of "episode 14.5").
** One episode of ''WebVideo/CodeMENT'' said that ''WebVideo/HellsingUltimateAbridged''[='s=] Alucard was ''WebVideo/CodeMENT''[='s=] Lelouch's uncle and ''WebVideo/DragonBallAbridged'''s Nappa makes a short appearance.
** ''WebVideo/NonePiece'' received a crossover with ''WebVideo/NarutoTheAbridgedComedyFandubSpoofSeriesShow'', ''WebVideo/CodeMENT'' and ''WebVideo/YuGiOhTheAbridgedSeries'' in the "Ninjas v Pirates" video.
* [[https://www.youtube.com/channel/UCrY2Tjksjsx18qi7IXFGrDg partygoers0121]]'s videos were built around various cartoon characters competing in ''Anime/YuGiOh'' duels against each other. Characters present include WesternAnimation/{{Arthur}}, [[WesternAnimation/TheSimpsons Homer Simpson]], [[WesternAnimation/RegularShow Margret and Muscle Man]], [[WesternAnimation/FamilyGuy Lois Griffin]], [[WesternAnimation/TheFairlyOddparents Trixie Tang]], [[WesternAnimation/PhineasAndFerb Stacy Hirano]] and [[WesternAnimation/AquaTeenHungerForce Master Shake]]. The series eventually culminates in a DuelToTheDeath between WesternAnimation/SpongeBobSquarePants and [[WesternAnimation/TheGrimAdventuresOfBillyAndMandy Mandy]].
* [[https://www.youtube.com/watch?v=u8g_MSPVBk0 Roosterteeth]] and [[https://www.youtube.com/watch?v=LwVIJFGzptU Mega64]] ''Finally'' teaming up. Though they have run into each other [[https://www.youtube.com/watch?v=wCujys4QAhw before.]]
* ''Franchise/TheSlenderManMythos'' has an enormous amount of crossovers. http://imgur.com/0XSOjTg
* ''WebAnimation/SuperMarioBrosZ'' crosses the universe of ''Franchise/SuperMarioBros'' with that of ''Franchise/SonicTheHedgehog''. And its one big love letter to Franchise/DragonBall.
* The season 2 finale of ''WebVideo/TheMisfortuneOfBeingNed'' has Ned enter a door Sketchy Dude points out leads to a famous Website/YouTube series. Ned is hoping he meets stars such as WebVideo/{{Smosh}}, Creator/{{Tobuscus}} and LetsPlay/PewDiePie. Instead, [[MediumBlending everything but Ned appears in live-action]] as Ned is transported to the world of ''WebVideo/TheAnnoyingOrange''. It helps that both series are posted on the same channel.
* Music/LemonDemon's "UltimateShowdownOfUltimateDestiny"
* ''WebVideo/ModernRogue'' has done a handful of crossover episodes with ''WebVideo/TheWhiskeyVault''. In the early videos, TWV host Daniel Whittington introduced Brian and Jason to the basics of whiskey terminology and types, and the ways in which it can be ordered at a bar. In a later video, Brian accompanied Daniel and TWV co-host Rex Williams on a tour of the distillery they've established.
* ''WebVideo/MrCoat'': With [[WebVideo/RebelTaxi Pan Pizza]] in his Raven episode of Character Profile.
* [[WebAnimation/JoCat JoCrap]] featured heavily in ''WebAnimation/NCHProductions'' animation "[[VideoGame/MonsterHunterWorld MHWorld]] shots: [[https://www.youtube.com/watch?v=CjOL9XYk07k State of SnS.]]", [[HeroicBSOD having a complete mental breakdown]] over the ''Iceborne'' expansion indirectly {{nerf}}ing his beloved Sword and Shield by expanding the ability to use the Slinger without sheathing the weapon first to all weapon types.
* Some of the characters in ''WebVideo/VaguelyRecallingJoJo'' are replaced with various characters from other works because the fan is vaguely recalling the series, so he fills in the things he does not remember with the things he remembers from the other series. Sometimes, they are used in {{funny background event}}s
** Magician's Red is now a [[VideoGame/PokemonRubyAndSapphire Blaziken]] and GEB happens to be its weakness because GEB is a Water-type.
** Hermit Purple is [[VideoGame/MegaMan6 Plant Man]].
** [[VideoGame/GuiltyGear Faust]] is the doctor that treats Joseph.
** Nena is replaced with [[VideoGame/GuiltyGear Bridget]] and Empress is replaced with Roger the Teddy Bear.
** Jesus and Buddha from ''Manga/SaintYoungMen'' can be seen in the background when Jotaro is confronting Enya.
** ZZ is replaced with [[VideoGame/FZero Captain Falcon]].
** [[VideoGame/YumeNikki Madotsuki and Seccom Masada]] are background characters during the Death 13 arc.
** [[VideoGame/{{Darkstalkers}} Hsien-Ko]] is the cashier at the Egyptian UsefulNotes/McDonalds.
** Blossom of ''WesternAnimation/ThePowerpuffGirls'' is High Priestess and Polnareff becomes Prof. Utonium during an ArtShift.
** Part 24 starts off with a parody of ''Series/TwentyFour''.
** The Speedwagon Foundation workers are replaced with [[VideoGame/GuiltyGear Zato-1]] (who is Rubber Soul in disguise), Manga/BlackJack, Pinoko, Faust, [[Manga/OnePiece Dr. Kureha]] and [[Anime/DragonBallZ Broly]].
** Iggy turns the Fool into [[Franchise/{{Pokemon}} Regirock]] and pummels N'Doul into the ground.
** Khnum is now Oingo's [[Series/KamenRider belt buckle]]
** Chaka is replaced with [[Manga/RurouniKenshin Makoto Shishio]] and he fights off characters from his series.
** Bast is replaced with [[VideoGame/BlazBlue Taokaka]] and the old lady is replaced with [[Literature/SpiceAndWolf Holo the Wisewolf]].
** [[VideoGame/CastlevaniaRondoOfBlood Richter Belmont]] and [[VisualNovel/{{Tsukihime}} Ciel]] provide Jonathan with some backup.
** Will A. Zeppeli punches [[Manga/SoulEater Eruka]] and [[Franchise/TouhouProject Suwako]] out.
** VideoGame/DukeNukem's soul is in Daniel J. D'Arby's collection.
** VideoGame/{{S|kullgirls}}quigly is one of the wedding party-goers
** [[VideoGame/SkullGirls Double]], [[VideoGame/GuiltyGear Dr. Baldhead]], [[Manga/YuGiOh Tom]], and [[Franchise/TouhouProject Nazrin]] are in Telence T. D'Arby's doll collection.
* ''Website/TalesFromDevNull'': Highly encouraged in [[https://www.4eye-labs.net/devnulltales/content/makeastory/ Make-A-Story.]] See [[https://www.4eye-labs.net/devnulltales/content/makeastory/#preset=forest-spongebob this]], [[https://www.4eye-labs.net/devnulltales/content/makeastory/#preset=mystery-kingkong this]], and [[https://www.4eye-labs.net/devnulltales/content/makeastory/#preset=scifi-tripleH this]] for examples.
* {{Subverted}} in ''Webvideo/VampireReviews'' - Maven is all set to do a joint review of {{monster mash}}es with [[Webvideo/AtopTheFourthWall Moarte]], but then he remarks that as well as vampires, he also likes werewolves.
** ''Secret Convergene On Infinite Podcasts'' was a 9 part crossover podcast featuring ''Podcast/JayAndMilesXPlainTheXMen'', ''Podcast/WarRocketAjax'', ''Podcast/HouseToAstonish'', Into It With Elle Collins, Less That Live With Kate Leth, Fanbros, Wait What?, Silence!, and Journey Into Misery.
* There's [[http://www.scp-wiki.net/scp-4445-j a crossover]] between the Website/SCPFoundation and Website/TVTropes. Also, the Foundation site has Project Crossover, which catalogues crossovers with the Foundation.
* ''WebVideo/TheWarOfTheTwitchPlays'': A crossover event between ''WebVideo/TwitchPlaysPokemon'', ''[[https://www.twitch.tv/twitchplaysspeedruns Twitch Plays Speedruns]]'' and ''[[https://www.twitch.tv/twitchplayspapermario Twitch Plays Paper Mario]]'', in which all three streams competed to complete a specific version of ''[[VideoGame/PokemonRedAndBlue Pokémon Red, Green and Blue]]''. ''Twitch Plays Speedruns'' played on ''Pokémon Red'', ''Twitch Plays Paper Mario'' was attributed ''Pokémon Blue'', and ''Twitch Plays Pokémon'' ran ''Pokémon Green'', a "localized" version of the Japanese ''Pokémon Blue''[[note]]The international versions of ''Pokémon Red'' and ''Pokémon Blue'' are both based on the engine of the Japanese ''Pokémon Blue'' and feature the same sprites and maps, but use the Pokémon locations and trades from the Japanese ''Pokémon Red'' and ''Pokémon Green'' respectively, whereas the Japanese ''Pokémon Blue'' has its own unique trades and locations.[[/note]].
* ''WebVideo/WorldWarTwo'': The series has collaborated with The Tank Museum and Nicholas "The Chieftain" Moran to produce series about the armored vehicles of the war.
* Several WWE superstars such as Wrestling/TheNewDay have appeared in ''WebVideo/BeingTheElite''.
* Numerous story-based [=YouTube=] Poops involve a crossover one way or the other, including characters from properties like Franchise/TheLegendOfZelda, Franchise/SuperMarioBros (both of which preferably use the CD-i cutscenes), Franchise/SpongebobSquarepants, and numerous others. Those aren’t even the tip of the iceberg.
* In 2020 Website/YouTube comedy groups WebVideo/ShipwreckedComedy and Creator/TinCanBrothers had ''The Bookfarters Saga,'' a crossover event that started with the two of them uploading separate videos made from the same script. It continued with a scripted feud that played out through social media and simultaneous livestreams, and ended with a co-created video where they hashed the dispute out in an arbitration. [[TheReveal The final reveal]] expanded the crossover even further, revealing both troupes stole the original idea from [[WebVideo/JackAndDeanOfAllTrades Jack and Dean]] back in 2005, with a FreezeFrameBonus that the informant who leaked this information was from Creator/TeamStarkid.
* ''WebVideo/PoohsAdventures'' is about Pooh and his friends go on crazy and bizzare adventures on Disney, Pixar and Dreamworks films along with other characters from other franchises.
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