The correct spelling is "superheroes".
superheroes
It depends on the usage:The plural noun "superpowers" refers to the powerful nations of the world.The plural noun phrase "super powers" refers to superhuman abilities of fictional superheroes.
The two words are now combined into the one word : superhero .
If you are trying to spell musician that is how you spell it.
The correct spelling is "superheroes".
superheroes
The Physics of Superheroes was created in 2005.
Superheroes - DVD - was created in 2005.
The Physics of Superheroes has 365 pages.
Dc superheroes
If you would like to eat superheroes, then you are a cannibal.
Superheroes of BMX was created on 1997-05-26.
Legends of the Superheroes was created on 1979-01-18.
Legends of the Superheroes ended on 1979-01-25.
The World's Greatest Superheroes ended in 1985.
International Superheroes of Hardcore was created in 2008.