One Punch Man manga illustrator Yusuke Murata is one big fanboy. This is evident with his recent twitter art dump, as he posted images of several works from his fandoms. These artworks include ones inspired by Street Fighter, Dragon Ball, Alice in Wonderland and Back to the Future, as well as a crossover art with Hunter x Hunter and One Punch Man.
Yusuke Murata has admitted that he is a huge fan of these works, and Capcom even hired him to do official Street Fighter V artworks. Marvel also hired the mangaka to do official Spider-Man art.