A great series of posters depicting Iron Man in a style from the early soviet days. Iron Man: Industrial Revolution by Juan Doe.
Minimalist DC Superhero Mugshot Poster from Michael Myers.
Superb style with these images of comicbook superheroes from Designer Illustrator Sanjai Bhana.
Hagiographies by the Italian artist Igor Scalisi Palminteri. He reinterprets religious statuettes as superheroes.