When two comic book titles merge into one.
One title may just subsume the other. Alternatively, a new title might combine the names of the two pre-existing ones, or have a completely new name.
- Tornado, Starlord, Crisis, and Revolver all merged with 2000 AD.
- Hoot and Nutty which both merged with The Dandy.
- Buster, an unofficial spinoff of sorts of Andy Capp, merged with probably the largest number of comics during its run than any other comic; the final merger was with Whizzer and Chips in 1990. Many of the comics it merged with had already merged with other comics, especially Whizzer and Chips, which had merged with four comics during its lifetime. One of those four (Whoopee!) had also merged with another three comics.
- The Beano, arguably Britain's most well known comic, has had no official mergers over its lifetime. However, it has absorbed characters from comics which have ended such as The Numskulls from The Beezer and Fred's Bed from The Topper. Speculation ran rampant that the Dandy's Desperate Dan could end up in The Beano as well when its print run ended (Bananaman already appeared in both comics), but it continued as a download and in annuals, so Dan has stayed where he is.
- The merger of the aforementioned Beezer and Topper is another odd example with the two comics' merger in 1990. The new comic formed was called The Beezer and Topper and unlike many other mergers both comics where given equal billing until the comic's end in 1993.
- Although The Beezer and Topper didn't merge into Beano or Dandy, the two comics did take on some of their characters. Beryl the Peril and Blinky went into the Dandy, while the Beano initially took on The Numskulls and later revived Fred's Bed, Adrian the Barbarian (renamed as Olaff the Madlander), and Tricky Dicky.
- The final survivor of the five Power Comics (Smash! which later merged with Valiant) absorbed the other four power comics and for a brief time went by the name Smash and Pow incorporating Fantastic.
- Perhaps the most famous American example is the merger of the Marvel Comics series Luke Cage, Power Man and Iron Fist in the late 1970s, which worked so well the characters still turn up together more often than not.
- Earlier in the decade, there was briefly a plan to do this with Daredevil and Iron Man slated to become parts of a single "double feature" title due to their solo comics' failing sales. Instead, both went bimonthly for awhile instead, and both recovered thanks to well-received runs.
- This happened during the so-called "DC implosion" in the late 1970's. By the mid-70s, DC was looking for a new plan to support its superheroes, and it found it almost by chance when a publishing experiment revealed that readers were enthusiastic about 80 or 100 page comics, with wider profit margins. Hence, DC developed a three pronged strategy: keep their profitable big-name (licensable) characters in their own regular comicbooks, cancel the worst selling titles outright, and merge everything in-between into super-sized anthology titles. As such, characters with decent sales but limited licensing possibilities found themselves uncomfortably sandwiched together into the pages of titles such as Superman Family, Batman Family, or Super-Team Family.
- Thus, In 1974, DC Comics canceled Supergirl's first book, Superman's Pal, Jimmy Olsen, and Superman's Girlfriend, Lois Lane. The three features were combined (along with other occasional Superman-related features) in the (ahem) super-sized Superman Family title, which ran until 1982.
- In an odd fate, thanks to the aforementioned "DC Implosion", DC was on the verge of cancelling Detective Comics. What did they do to save it? The combined it with their best-selling Batman book, Batman Family, waited until its sales started to return to normal, and returned it to normal old 'Tec.
- After the "DC Implosion", completed but unpublished stories of several solo characters including Black Lightning saw print as backups in other characters' comics.
- Cable and Deadpool had their solo series merged into Cable & Deadpool for a while; the fact that these characters didn't go together well was part of the humor.
- The Atom and Hawkman had their solo titles merged into Atom and Hawkman for a while; not as successfully as Power Man and Iron Fist, but it still made them canonically best friends for years thereafter.
- The 1980s revival of Eagle enabled the completion of a notable merger chain. The original 50s Eagle had been merged into its rival Lion when it closed. Lion would later be merged into Valiant, which in turn was ultimately merged in Battle. Finally, Battle itself was closed and merged into... Eagle.
- In Poland superhero comic books were immensely popular among kids after the fall of communism, but at the end of decade the sales decreased. While Spider-man and The Punisher still sold well, Batman and Superman comicbooks were merged into one title. It was cancelled after a year.
- When the initial run of Captain Britain concluded, the series continued as a backup feature in Super Spider-Man and the Titans, displacing Titans to form Super Spider-Man and Captain Britain.
- Secret Empire saw Captain America: Sam Wilson and Captain America: Steve Rogers merge into a singular Captain America title, with Sam Wilson's numbering, Steve Rogers' artist and the writer for both titles. That issue, Captain America #25, was the end of Nick Spencer's run.
- In January 2018, U.S.Avengers, Uncanny Avengers and Avengers (2016) merged to form the weekly book Avengers: No Surrender.