In my art class our teacher was showing us examples of foreground, middleground, and background in pieces of art. Then he showed us an example he made showing the scene from Cuphead where Cuphead gets too greedy, and throws his dice. Then he explained how he helped the actual art of the game. Apparently, He made the trees in the background of the first run and gun level. (as seen in the attached picture) His name isn't actually listed but in the credits they give special thanks to all of those who contributed. So thats pretty cool.