On the wikia site, Aurora's mother who is sleeping Beauty was an option. Since Aurora isn't actually THE sleeping beauty but her mother is. Although I find that highly unlikely.

Curella DeVille? She has nothing to do with the world of science-fiction/fantasy. She's just an overpriveledged socialite with a murderous nature and a penchant for furs.

Either her or Medusa?

Or the Wicked Witch of the West.

Seems the most likely but Cruella De Vil has also been rumored to appear so maybe... although I like idea of her being Ursala much better. Cruella De Vil isn't a Fairy Tale.

Half the characters in the show aren't from fairytales though, well at least some. Like Dr Whale, for example, so it doesn't matter.

Frankenstein and Pan are at least from classic literature (within the public domain). If you add Cruella De Vil you might as well add Mary Poppins and Harry Potter.

They have hinted at adding Mary Poppins.

She remembers me Avril Lavigne! :o

@minervadawn, I agree. I don't like the idea of Cruella De Vil much either.
I do like the idea of the Wicked Witch:) Ursula doesn't seem to have by far enough history with Gina or reason to hate her. Medusa is supposedly dead already... and she just looked like some random, legendary, wild monster, not really a villain.

Guys, I'm just taking the options off of another poll on Onceuponatime.wikia :P

@Ariee: What about Avril??

I have no idea who it will be... Can't wait to find out though:)

Please be her i adore Oz and i would love another version of the witch of the west although Wicked will always be my favorite version of that.