Superheroes aren't just one genre. They're tons of genres, smushed together. Aliens rub elbows with supernatural beings. Gods walk side by side with monsters. Over the decades, superheroes have borrowed from other genres, sometimes swallowing them whole. Here are 10 genres that got absorbed into superheroes, partly or completely.
Some of these genres no longer exist as separate entities, while others still carry on, even though they've been partly absorbed into the superhero machine.
10 Genres that Superheroes Have Swallowed Up

1) The Pulp Crime-Fighter

Back in day, pulp characters like the Shadow, the Whisperer, the Spider and the Masked Detective fought crime anonymously in the big, dirty city. Those characters are gone, but they live on in Batman, the Arrow TV show, the Spirit, and tons of other masked or secret crime-fighters.
10 Genres that Superheroes Have Swallowed Up

2) Weird Supernatural Horror

Sometimes dreadful supernatural forces invade our reality, and push their way into our dimension so they can wreak unspeakable damage upon us. Mad gods and ancient monstrosities, they're a staple of Lovecraft-era Weird Tales, and in the pulps they're encountered by heroes such as Silver John. And nowadays, they're the sort of thing encountered fairly often by Dr. Strange, John Constantine and the members of Justice League Dark, among many others.
10 Genres that Superheroes Have Swallowed Up

3) The Gothic Monster

In the tradition of Frankenstein and Jekyll and Hyde, there have been tons of novels and movies about people who become monsters, or monsters who are almost people. Often, they hide from a society that fears and misunderstands them. Transplanted into the superhero genre, characters ranging from the Incredible Hulk to Hellboy to Swamp Thing get to tangle with big robots and alien invaders, as well as fellow monsters. Image via Doctor Caracter.
 
10 Genres that Superheroes Have Swallowed Up

4) The Jungle Adventurer

There were so many jungle adventure pulps and comics in the early part of the 20th century, until they finally got pulled into the superhero world. Besides Tarzan, there were Ki-Gor the Jungle Lord, Tam, Son of the Tiger, Morgo the Mighty, Kaanga, Yarmak the Jungle King, Blanda Queen of the Jungle, and countless others. One character, Ka-Zar, started out as a pulp adventure hero, only to be reinvented a couple of times and wind up as a Marvel Comics character. Other jungle superheroes include Black Panther, B'wana Beast, Congorilla and the Phantom. Oh, and let's not forget Lo-Zar. As a side note, the Land of the Lost trope of a secluded region where dinosaurs and other extinct predators still roam reaches its perfect expression in things like Marvel's SavageLand.
 
10 Genres that Superheroes Have Swallowed Up

5) The Space Hero

Back in the day, there were tons of adventurers toting rayguns into space, including Flash Gordon, Perry Rhodan, Buck Rogers, Rocky Jones Space Ranger, Captain Video, Captain Future and countless others. They had pulp stories, film serials, radio serials and television shows — including a few comebacks in the past few decades, including a Flash Gordon movie and a Buck Rogers TV show. But these days, arguably the most famous pulpy space adventurers include Adam Strange, Captain Mar-Vell, the Guardians of the Galaxy, and to some extent Green Lantern and Nova.
 
10 Genres that Superheroes Have Swallowed Up

6) Posthuman Mutants

There have been tons of science fiction stories about mutants who develop strange powers, going back to John Wyndham's The Chrysalids and Theodore Sturgeon's More Than Human. But nowadays, if you think about stories of mutants who develop mental powers or other weird abilities — and are misunderstood as result — the first thing that probably comes to mind is probably Marvel's X-Men, or Chronicle. (Or maybe Leela from Futurama.)
 
10 Genres that Superheroes Have Swallowed Up

7) Power Armor

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