|Classification||A soul-stolen human|
|Real world information|
|Appears in||The Grim Adventures of Billy & Mandy|
|First appearance||"Billy Idiot"|
|Voice actor||Jennifer Hale|
Marilyn's persona is largely unknown. What is known, is that Marilyn speaks with a lisp and salivates when she talks in what appears to be a frozen or stuck in place crooked smile.
Whether or not, Mrs. Pollywinkle caused her fear and she's just too scared to say anything to the contrary or her behavior is a result of her soul being stolen is unknown.
To date, it's unknown if Marilyn appears in any episodes other than Billy Idiot.