Marilyn is one of the three Shadow Sirens. She seems incapable of speech, only saying "Guhhh", so it's hard to tell what kind of person she is. However, she seems to go along with whatever Beldam says, regardless of how harshly Vivian is treated as a result.

Marilyn should sound deep-voiced and unintelligent. This will likely be the easiest voice for people to do, but it'll probably make it harder for me to cast as a result. So anything you can do to make the voice unique (but still fitting) will be greatly appreciated.

This role will occur frequently throughout the entire game, starting at the end of chapter 1.