Definitely beats the usual curve of cartoon-based movie parodies in that you've chosen some interesting characters to swap into the movie roles. The main issue I see here, content-wise, is that I don't really believe the cartoon/human divide. Why? Well, *everyone* in this story is a cartoon. Sure, I can suspend my disbelief and try to pretend that Bubbles is a real woman and Pein is just another film producer, but it doesn't really ever gel for me. I think you may have to expand the description of the "human" characters to make them more believably flesh and blood.

As for the presentation, I have a couple of suggestions:

-Remember to separate your dialogue into paragraphs for each speaker. Whenever someone new talks, you should almost always start a new paragraph. This will help the flow and readability of your story tremendously. For instance, this:

["Too many rocks dropped on his head?" She laughed dryly. Pein shook his head "Nah... Drop a flaming cat on him and he'll handle it. Break his heart... He'll fall to pieces like you and me."]

-should look like this:

["Too many rocks dropped on his head?" She laughed dryly.

Pein shook his head. "Nah... Drop a flaming cat on him and he'll handle it. Break his heart... He'll fall to pieces like you and me."]

-You could probably expand the level of sensory description with minimal addition to the density of the story. Just a few direct descriptions of sights, sounds, smells, etc. could go a long way toward making this a more vital and engrossing tale.

So far, you've got a good start to things. It needs a bit of spit and polish, but not much. Good luck as it progresses!