Writer Jeff Deischer has taken a group of public domain superheroes from the Golden-Age of comic from Nador / Standard Publishing and put them in a Pulpy prose novel.
I don’t know why no one thought of this before.
Sure there have been gangs of other short stories and novels based on comic book characters from the ones you would expect, Superman, Batman, Spider-Man etc, and one’s you might not expect, The Challengers of the Unknown, The Question and The Thunderbolts.
But few involving comic book characters from the Golden-Age, about the only one I know of being that one shot Angel pulp that came out in the 40’s.
Entertaining, and you can get it for the Kindle.