If I were to take a well-known character from a movie or video game, lets say Super Mario, and I drew an image of him in my own art style, completely from scratch. Would I be infringing on Nintendos IP? Nintendo own the image of Mario, but I drew an image that was based on him but not created by Nintendo.
Take the images below. These are crude drawings that look nothing like the characters from the Super Mario series, yet they are identifiable as the characters. Would it be legal to sell these images as posters or tshirt prints etc? Does Nintendo own to copyright to this image because it contains characters they created even though the artwork itself is original?