Books/franchises with their own pages:
Other Comic Books
- Teenage Mutant Ninja Turtles:
- Cudley The Cowlick, the flying cow head/spaceship from the Archie-published Teenage Mutant Ninja Turtles Adventures comic book, eventually made its way into the original comic book continuity, appearing in a couple of stories. In a bit of a departure from the trope, it was hinted that the Cudley that showed up in the Mirage comics was the same one from the Archie comics, instead of being a different incarnation of the same character.
- Charles Pennigton from the 1990 TMNT movie made his way into the original Mirage continuity in Tales of the TMNT #59.
- Teenage Mutant Ninja Turtles (IDW) runs wild with this, blending together elements and characters from Teenage Mutant Ninja Turtles (Mirage), Teenage Mutant Ninja Turtles (1987), Teenage Mutant Ninja Turtles (2003), the Archie comics and Teenage Mutant Ninja Turtles (2012). Even Ninja Turtles: The Next Mutation is fair game.
- Extreme Ghostbusters' Kylie Griffin made her way into the IDW Ghostbusters comics continuity, with Eduardo from the same show making his way in as well. (In IDW's Ghostbusters multiverse, all Ghostbusters media takes place in different universes, and their Kylie and Eduardo are Alternate Universe counterparts to the originals.)
- Lou!: Pretty much every neighbor that lives in the same building as Lou except for Richard and Ms. Chiourme is completely original to the animated series, those being the Old Man, Lucien and Mr. Verdier and his dog Bubu. They later make a short appearance at the beginning of volume 5.
- Toyline ponies Sweetcream Scoops and Sugar Grape cameo as background ponies in My Little Pony: Friendship Is Magic (IDW).
- Jessica Priest from the Spawn movie was imported into the comics and Retconned into being the person who killed Al Simmons in the first place. She had appeared as his killer in the film (since rights issues made it impossible to use Chapel, the man who killed Al into the comics), and was brought into the comic continuity once similar legal issues with Rob Liefeld led to Chapel being Exiled from Continuity.
- The IDW continuity for Transformers is G1 based but numerous other characters are integrated from all over the franchise. Deluge and Dreadwing from Transformers: Generation 2, Waspinator and Rattrap from Beast Wars, Tankor from Beast Machines, Sky-byte from Transformers: Robots in Disguise, Lightbright, Lugnut and an Expy of Blitzwing (Blitzving) from Transformers: Animated,note as well as Bulkhead, Knock Out and Breakdown note the Vehicons and at least one Insecticon from Transformers: Prime, and finally Lockdown, whose design is an immigrant from the movies who was an immigrant from Transformers: Animated.
- Breezie the Hedgehog, a character from Adventures of Sonic the Hedgehog, made the jump over to Sonic the Hedgehog (Archie Comics) over 20 years after the last canon immigrant, Pseudo Sonic.
- Marcus, the cop ex-partner of Big Daddy, was a character specifically created for the movie of Kick-Ass. He was written into Kick-Ass: Volume Two as Hit-Girl's cop step-father.
- The concept of the Archie Comics characters being in a band originated from The Archie Show.
- Wynonna Earp: Following the success of the TV show, Agent Dolls and Doc Holliday appeared in the newest series of the comic book.
