The following is from a discussion on DC's message boards (
http://dcboards.warnerbros.com/web/thread.jspa?threadID=2000253797&tstart=0) of the origins of the various comics properties that have been acquired by DC Comics over the years. DC is not always publicly forthcoming with the details of their acquisitions, so much of this information is based on comic book indicia, the speculations of comics historians, and shreds of information that have leaked out through interviews and public appearances by DC Comics personnel This information has been shared among comic book aficionados through the process of rumor and legend, which is highly subject to error.
I provide this information to this forum so that it can be discussed and debated, corrections can be made, and additional knowledge can be added.
To begin with, National Comics and All American Comics merged early on to form DC Comics.
Quality got bought in the mid 50's; most of their stuff had been canceled by that time, but Blackhawks and G.I. Combat continued uninterrupted and without renumbering (could you imagine that happening now?). DC later revived Quality's Plastic Man, and eventually other Quality superheroes including Phantom Lady. It has been claimed that some of these lesser known Quality characters had actually passed into the public domain at the time that DC first revived them, so their exclusive ownership of these characters might be a matter for debate. Notably, Phantom Lady, a character created by the Eisner/Iger studio, was canceled by Quality in the mid 1940's, and was later licensed from Jerry Iger by Fox Feature Syndicate. More on Fox later.
The earliest masked hero created specifically for American comic books was The Clock, created by George Brenner for Comics Magazine Company, the primary forerunner of Centaur Publications. When Brenner left Centaur to become an editor for Quality, he took the Clock with him, and placed the character in some of Quality's comics, which in those early days were of anthology format. Based on the Quality comics appearances, the character has been looked upon as a DC property, and has been referenced in James Robinson's Starman and the JLA Destiny Elseworlds comic. However, the character has also appeared in Malibu Comics' Protector's, which may or may not currently be the property of Marvel.
in the 1960s DC purchased two romance comics, Young Love and Young Romance, from Prize Comics. These titles, like the Quality acquisitions before them, continued uninterrupted and without renumbering. In the 1970s, DC reprinted stories from the Prize Comics horror title, "Black Magic" with art by Kirby; this may indicate that DC owns more of the Prize Comics catalog than just the two romance comics. In its heyday, Prize Comics published Green Lama, The Fighting American and Dick Briefer's Frankenstein, had a stable of superheroes with such names as Airmale, Atomic Man, Black Owl, Doctor Frost, Yank & Doodle, Blue Streak, Flying Fist, Power Nelson, Jupiter, K the Unknown and others.
Here's a very slim, obscure connection. DC published a comic based on Ideal Toys' Captain Action; the character was portrayed as possessing coins that gave him the powers of mythological beings. In the late 1990's, a new DC character, Obsession (
http://dc.wikia.com/wiki/Obsession), possessed the coins.
In the 1970's, DC licensed Captain Marvel from Fawcett. Years later they bought the rights to the Fawcett superheroes outright.
In the mid 1980's, DC bought from Charlton the characters that had been published under the "Action Heroes" banner in the 1960's. Now here is an interesting thing: The Blue Beetle, purchased from Charlton, was purchased by Charlton from Fox Features Syndicate. Now the characters with that name that DC has presented in its comics are a little different from the old Fox Blue Beetle, but the original Fox secret identity name "Dan Garrett" has been used once or twice in DC books, and the Fox character appeared on a "DC Cosmic Cards" trading card in the early 1990's. It is also notable that for a couple of years in the 1940's, when Fox was having money troubles, the Blue Beetle was published by Holyoke Comics.
In the 1950's, Charlton comics purchased some unused material from Fawcett comics, which was getting out of the comics business for complicated reasons that deserve a separate discussion. Charlton published at least one issue of Ibis the Invincible, and some Nyoka the Jungle Girl material. Hoppy the Marvel Bunny continued at Charlton, in revised form as Hoppy the Magic Bunny, a character divorced from his Captain Marvel roots. A few Fawcett comics series were continued by Charlton. When Charlton got out of comics in the 1980's, AC Comics' Bill Black bought the rights to Nyoka, without any legal objection from other parties, affirming Charlton's ownership of at least that character up to that point. It is possible that Charlton could have had a legal claim to Ibis, but DC seems to have been able to publish that character without any problems.
Milestone Media, publisher of Static, Hardware, Icon, etc., was founded by Dwayne McDuffie and his associates in the 1990's. The company was affiliated with DC from the beginning, and has now been absorbed into DC.
Several years ago, DC absorbed Jim Lee's Wildstorm, one of the original Image Comics affiliated studios.
I've found no confirmation, so this is only rumor; through a series of corporate acquisitions, the company that was once Nedor/Better/Pines comics may have at some point in the past been acquired by Time/Warner.
Through acquisition, Warner now owns most of the several thousand characters formerly published by IPC Magazines, who dominated the British comics industry for over a century. Many characters were used in the 2005-2006 Wildstorm limited series 'Albion' and its two follow up series 'Thunderbolt Jaxon' and 'Battler Britton'.
On at least two occasions, DC has published Archie's superhero characters, but nothing permanent. The same is true of Tower's T.H.U.N.D.E.R. Agents. The Shadow was licensed by DC in the 70's and established as existing in the main line universe, but again there was no permanent ownership. Various Warner Animation and Hanna-Barbera characters are also owned by DC's parent company, but have been kept separate from DC's properties.
So we have:
1. National Periodicals
2. All American
3. Quality
4. A tenuous connection to the Ideal Toy company
5. At least part of the Prize Comics library
6. A tenuous connection to Comics Magazine Company and...
7. A tenuous connection to Centaur Publications.
8. Fawcett Publications
9. Charlton and...
10. an ancestral link to Fox Features Syndicate and...
12. Milestone Media
13. Wildstorm, which might be considered an offshoot of Image, but I won't go there.
14. Ownership of IPC Magazines' characters by DC's parent company Time/Warner.
14. A rumored acquisition of Ned Pines' company.
Have I left any out?