So far in Season 4 of 'Once Upon A Time', fans have seen the wicked Snow Queen (played by Elizabeth Mitchell) exposing her cold nature, the plain-speaking Bo Peep (played by Robin Weigert) proving that she wants to be in charge of things, and the complete cast of Disney's 'Frozen'.

In regards to what's next, fans can expect the evil Maleficent (played by Kristen Bauer van Straten) to revisit Storybrooke sometime in the upcoming episodes, while 'Dracula' alum Victoria Smurfit has been signed in to portray the character of Cruella de Vil, who is well known for her loathing for Dalmatians as well as her black-and-white locks.

Furthermore, the creators of 'Once Upon a Time' have already brought in Pongo, the character from Disney's '101 Dalmatians', whose owner by Archie/Jiminy Cricket, but looks like any ordinary dog.

There are speculations that in 'Once Upon A Time', Cruella will be a hunter of magical creatures and not simply a dog skinner. If this is true, werewolf Red Riding Hood should be careful.

There have been lots of surprises in 'Once Upon a Time' Season 4 so far. However, more surprises are likely to come in the second half of the series, when Cruella is likely to make her appearance.

On that note, she will only be introduced after the completion of the 'Frozen' arc in the story. For now, the show creators have kept the details pertaining to the character under wraps, and they surely weren't supposed to find out who's going to play Cruella.

However, a report by E! Online claimed that in a recent tweet, Smurfit had revealed the secret stating, "Super excited about playing Cruella for such an iconic show as @OnceABC."

Nevertheless, the tweet was deleted promptly, but was still caught by some sources.

'Once Upon a Time' Season 4 Episode 7, entitled "The Snow Queen," will be broadcast via ABC on November 9 at 8:00 pm EST.