Crossover / Webcomics

• In summer 2010, the world was introduced to an Axe Cop and Dr. McNinja crossover. And it was awesome.
• Batman: Wayne Family Adventures has several episodes that serve as crossovers with the other DC-licensed comics on Webtoon.
  • Episode 54, "S'tel ees a cigam wohs!", serves as a crossover with Zatanna & the Ripper, in which Bruce goes to see one of Zatanna's magic shows, only for the show to get attacked by Copperhead.
  • Episode 62, "Live From New York", serves as a crossover with Vixen: NYC, in which Robin and the Signal investigate a series of kidnappings in New York while visiting the city for a fundraiser, leading them to meet and team up with Vixen and Grace as they investigate the same kidnappings.
  • Episode 78, "Outlaws", serves as a crossover with Red Hood: Outlaws, in which Red Hood brings Artemis and Bizarro to the Batcave to pick up supplies, only to get increasingly sidetracked.
• The kids from Precocious showed up in Curtailed for a few strips. Naturally, the author of Precocious reciprocated by featuring Fox and Seley.
• Also, in Dragon City, there were four major crossovers from Jix. One was when an Ambis (the alien species from Jix) tried to take over the dragons' world, another instance when one of the villains tried to kill Erin because he thought the previous crossover was still disguised as her, one was when Jonas got kidnapped by one of Jix's minor villains, and the last was when Lauren and Jix saved Erin from her editor.
• Emergency Exit is quite famous for its very extensive crossover with Parallel Dementia, notably having a drastic effect on the plots of both series. It was also very, very long. Emergency Exit also had a crossover with Beyond Reality before that (though that crossover didn't really effect the plot at all) and later had a second crossover with Parallel Dementia that consisted largely of Fall and Eddie having a conversation, with several big revelations made.
• Ennui GO! has a crossover with Doctor Glasgow's other webcomic Black Hole (2019) in the "Crisis on Two Comics" arc.
• Ensign Two: The Wrath of Sue takes this trope up to eleven by having the cast traverse across most every alternate universe you can imagine. Characters and places of note are the Tenth Doctor, the Pokémon world, Sherlock Holmes, the world of Avatar, and Ponyville. And that isn't even half of them.
• Evil Plan The Webcomic had a brief and chilling crossover with the creator's other work Sire as of Chapter 7.
• Fans! had a crossover with Penny and Aggie recently, or at least the version of Penny and Aggie that exists in the Fans-verse. Charlotte turns to dark magic during the story and after being taken into custody by Aegis, ends up reluctantly helping them in their fight against The Order.
• General Protection Fault crossed over with Kevin & Kell in January 2004 with the storyline A Tail of Two Species. GPF principals Nick and Ki landed in the K&K world after a misadventure with Nick's MuTeX, resulting in massive instinct loss in the K&K universe. This led to the implication that GPF took place in K&K's established analogue human timeline. However, the GPF epilogue revealed this to be a Red Herring. The Gamester would explain in the strips that followed in GPF that he intervened to save Nick and Ki from a calamity, and that the reality they were native to was completely separate from the entwined realities K&K exists in.
• The main character in Here Wolf debuted in the comic book Horndog, and there are occasionally crossovers from time to time.
• It's been established in The Inexplicable Adventures of Bob! that Molly likes to write crack crossover fan fics, like The Brothers Karamazov meet Harold and the Purple Crayon (Harold uses his purple crayon to break Dmitri out of a Siberian prison). One of her fics got illustrated to appear on Dr. McNinja's website, thusly.◊
  • The strip itself has had brief cameos by characters from Melonpool, Zortic, Everyday Heroes, and Zeera the Space Pirate.
• Irregular Webcomic! does this from time to time, sometimes in ways you might not imagine.
• Jix has at least two crossovers from the creator's other series Dragon City. Both of which involve stories told about encounters with dragons, both of which were also mentioned in Dragon City, but without the Jix characters. Both times it involved main characters.
• Kevin and Chad: this comic crosses over with Jake n' Roxy (another comic by the author of THIS comic) in "Crossover".
• Least I Could Do had a huge one with characters from every video game webcomic (and a few others), all fighting each other to the death. Rayne died multiple times, but always came back due to them being clones. Combatants included Dinosaur Comics, 8-Bit Theater, Looking for Group, Ctrl+Alt+Del, Penny Arcade, xkcd, Cyanide and Happiness, and many, many others. Also, John dressed as the Green Lantern and Rayne's car became a Transformer. And he got it on with some superhero babes.
  • Sadly, the long-awaited battle between Black Mage and Richard the Warlock never happened since they were apparently on the same side, but 's not to say it never will. You never know with Sohmer and Lar.
    • Props if you noticed the background of the first 8-Bit Theater in Rayne and John's apartment window on one of the pages.
• The eponymous characters from M9 Girls! have met characters from several members of the Webcomic Underdogs, mostly as prose stories written by the M9 Girls author:
  • Clau got a bittersweet date with Sifo Kubek of The Demon Archives, by means of dimensional travel.
  • Any visited the kingdom of Elysium at Princess Chroma.
  • The M9 Girls find themselves at different sides of the conflict when they meet the gang of Ruby Nation, in a Darker and Edgier version of both stories.
  • Karla and Vero date Dan and Mike of Cesium. Things don't go as planned for the graduate students.
  • Larry and Stephanie from Groovy, Kinda open a dimensional portal onto the M9 Girls locker room. Things escalate fast. This crossover is considered canon in both comics.
    • A second crossover has a supporting character of Groovy, Kinda permanently moving to the M9 Girls! universe.
• Eerie Cuties/Magick Chicks: The latter is an ongoing Urban Fantasy Spin-Off of the former. Between their Shared Universe and characters from one making appearances in the other, it was inevitable that some of their plotlines would intersect.
  • The first major crossover involved Aloof Darkhaired Girl Layla, who's one of the protagonists from Eerie Cuties, meeting Smug Super Faith Abbot, who's one of the main characters from Magick Chicks. Which culminated in a fight between the two, that was finally brought to a peaceful resolution thanks to Tiffany's intervention.
  • And there was the time Brooke (from EC) met Faith's boyfriend, Ash, which lead to a friendly sparring match. At least, it was, until he deliberately provoked her because he knew she was holding back on him and wanted to see what she was fully capable of. It was a mistake that nearly cost him his life, since he hadn't known that the girl he was eggin on was a 14 year old Melusine, who could transform into giant constrictor.
• Mara did a crossover with Glyn In Monster Land, and it was more lighthearted than their usual fare◊.
• There's a crossover saga in Slimy Thief where in each arc the main character, Aisha, interacts with other creator owned characters. Apparently portals are opening up in alternate dimensions and sucking characters into hers.
• Something*Positive (and all of Randy's other strips by proxy except for Super Stupor), Queen of Wands (and Punch an' Pie by proxy), Penny and Aggie, Questionable Content, Scandal Sheet!, and Girls with Slingshots are all part of the same webcomic universe. Using S* P as a node, this is the beginning of the Grand Unified Webcomic Universe.
  • And now, Shortpacked!! and the rest of the Walkyverse by proxy. (Although a previous two-sided crossover between Shortpacked! and Questionable Content had already unofficially put it into the S*P Multiverse.)
• One of the earliest webcomic crossovers was a week of strips in 1998 between User Friendly and Sluggy Freelance where Torg temps at the ISP while Riff ends up battling the Coffee Monster.
• What's New? with Phil and Dixie throws in a few ideas.
  Deadlands is a game combining two unconnected categories — Western and Horror. As a result of the popularity of this refreshing juxtaposition, we can expect a slew of new games created by stitching together various "best selling" categories. Here's a preview...
• A brief subtle crossover in The Whiteboard, a quantum coffee maker dinosaur from Questionable Content pays a visit, here.
• Paranormal Mystery Squad is the sister comic to Vampire Cheerleaders. In the earlier volumes, characters from one would occasionally make appearances in the other. Volume 3 was the "Vampire Cheerleaders Must Die!" arc, which pit them against each other in a full-scale free-for-all style battle that ended with the cheerleaders being exposed as vampires and taken into costudy by PETM. Naturally, it didn't stay that way...
• Slave.In.Utero, author of Tower of God, was asked to do a promotional crossover for MapleStory's 9th year anniversary. He delivered.◊
• Peter Parker: Foreign Exchange Student melds My Hero Academia and Marvel's histories, making it more a Fusion Fic. That said, there is a straight crossover in the "Into the Spider-Fanfic Verse" strip, where Peter banters with his older counterpart from Amazing Fantasy as well as his Marvel Cinematic Universe version.
• The Comic Fury Crossover Exchange is a regular community event on ComicFury involving many different artists giving and receiving crossover fanart. It's developed its own quasi-continuity.
• Sonic vs. Goku is a fan-made crossover between Sonic the Hedgehog and Dragon Ball that's Exactly What It Says on the Tin: a fight between the respective franchises' protagonists which starts out as a friendly sparring match but escalates into an epic battle.

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