First of all, I wanna say that I do really like Tamara and think that she's a really cool villain with style and sinister charm to her in a more realistic way. I actually wish we got to know her backstory. Anyway, I like Cora, but it does annoy me all the crap she has done to her daughters. Besides, I love the other characters!

Never mind I see you added her.

No offense, but do you bother to read the entire question of the poll before voting and commenting?

I stopped watching the show when Ursula, Maleficent and Cruella teamed up so I'm fairly unfamiliar with those three, and I don't really know Nimue.
Was Anastasia ever in OUAT or is she just from OUATiW?

Anastasia was on Once Upon A Time In Wonderland

In terms of personality, it's Ingrid, I just could never get invested in her story the way I usually can with the villains of this show. In terms of expectations probably Dark Swan. She just didn't go bad the way I'd hoped she would.

And I agree KataraLover, I thought Tamara was a really interesting villain and I would have loved it if she'd stuck around longer.

None of them actually lol.

^ Same! The villainesses on Once Upon A Time, including Tamara, are absolutely FABULOUS! *Does a diva pose with the villainesses of Once Upon A Time* lol

She was the lamest of the villains on this list and along with Dark Snow never really did anything villainous. I think the best villain characters are the ones you hate and actively root against because they make you that invested. I kept waiting for Ursula's character to become more invested but instead she left.