Type the words “superhero minimalist art” into Google and you will find LOADS of results.
The above image comes via Tumblr. I really wish I knew who originally drew it. The art itself perfectly captures the iconic character of the subject. (If you know who drew this, please let me know.)
There is some obscure work out there. Others more recognizable. And Marvel seems to get the lion’s share of the fan work – but they are beautiful 🙂
(Hulk via phantomxlord on DeviantArt)