People have found by 'hacking' Black and White 2 that the monsters you fight in the movies in game are treated as Pokemon and their data is stored after the normal creatures in the Pokedex. See this video for what I mean:
http://www.youtube.com/watch?v=-R9Y89UHeXY
As you can see, they're basically treated as actual Pokemon, the movie scenes just being battles of some sort.
But as you can also see, there's no back sprite for any of them, hence if anything transforms into them (or you somehow catch one), you see a black square where the Pokemon's sprite should be.
So what happens if you take a Ditto to the movie studio? Do they turn away Pokemon with the attack transform? Because I assume they don't allow anything that would leave your Pokemon looking like a glitchy black square, right?
http://www.youtube.com/watch?v=-R9Y89UHeXY
As you can see, they're basically treated as actual Pokemon, the movie scenes just being battles of some sort.
But as you can also see, there's no back sprite for any of them, hence if anything transforms into them (or you somehow catch one), you see a black square where the Pokemon's sprite should be.
So what happens if you take a Ditto to the movie studio? Do they turn away Pokemon with the attack transform? Because I assume they don't allow anything that would leave your Pokemon looking like a glitchy black square, right?