Nothing? If you're acting like the sea witch in "The Little Mermaid" you're probably doing something wrong.

I don't think that's quite the same. Are they going out and hiring impersonators of the actors who declined the role or digitally enhancing the substitute to look like them? That seems closer to what happened here.

If they are so "Open" they should reveal their training data which created this voice. I am sure it is just movie audio from S. Johansson's movies.