Regarding non-fairytale and/or more real world storybook characters, Kitsis and Horowitz confirmed that the nurse in the hospital dungeon was Nurse Ratched from One Flew Over The Cuckoo’s Nest, a book set in a real world mental hospital, which was published in…*googling*…1962. So a character from a science fiction novel from the 1800s certainly wouldn’t be off limits.
I don’t think that they are really Nurse Ratched though. That is not like the nurses real name in fairytale land. I do think they were doing an homage to that movie, but not that those characters were actually that. That is entirely different then making Whale Frankenstein. That would not be just a homage to the character. It just seems out of the realm of what the show is trying to do to me. I may be wrong, we will see.
I really hope not because this would be worse for me then Bae being Henry’s father.