I really liked this cartoon, mostly because of how weird it was. Am I the only person who thought the pipe looked like a phallic symbol? Anyway, I thought the voices were great in this. It kind of reminded me of the voices used in "Avanue Q". I could tell where the Koopa would end up at the end. At first, I thought it was just going to be an infinite loop, because it was hard to tell the difference between the scenes.
I am certainly glad it wasn't. I was not expecting him to turn into a shell and attack everyone else, but I guess that makes sense. It's pretty scary when you realize how many times Mario has died. Bowser only dies once in the game, but Mario dies constantly! It's kind of an uneven match when you think about it.