Rebecca Mader Cast As Villain in 'Once Upon A Time'

Is Peter Pan on his way out? I'll miss him. But it looks like a new big, bad villain is on the way to Storybrooke. Who is left for this show to destroy? Maybe I'm still bitter about the recent revelations about Pan. But anyway.

Rebecca Mader has been tapped to play a mysterious and major new character on ABC's Once Upon A Time.

EOnline reports that while they can't reveal who exactly she'll be playing, she'll be featured as the new villain and will be appearing in multiple episodes.

Following the sure-to-be mesmerizing episode, Mader's fairytale identity will be revealed in an action-packed promo that will tease the long road of adventures our characters will face in the second half of the season. Trust us, you definitely don't want to miss this jaw-dropping reveal!

Fans will get their first glimpse at her identity on the mid-season finale airing December 15th.

Who do you think Rebecca will be playing?

Are there any other LOST alums you'd like to see on Once Upon A Time.