Regina (Lana Parrilla) won't be the only wicked woman in town in the upcoming second half of ABC's Once Upon a Time as she faces off with a trio of iconic villainesses.

'Once Upon a Time's Regina & Maleficent Slated To Have 'Huge' Flashback Episode, More Details

Maleficent (Kristin Bauer van Straten) is slated to make her triumphant return to Once Upon a Time alongside Cruella De Vil (Victoria Smurfit) and Ursula (Merrin Dungey). Parrilla spoke about Regina's relationship with the three villains in a new interview with Zap2It.

"I think Maleficent is more of a formidable foe because she's a powerful sorceress so I think she fears what Maleficent is going to bring to Storybooke and the potential danger of having this sorceress/dragon beast coming back," Parrilla told Zap2It. "She's not as threatened by the other two."

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It's no surprise that Maleficent is most formidable as she is often portrayed as the leader of the Disney villains. Angelina Jolie certainly left a big mark as Maleficent in this year's live action movie of the same name, and the Once Upon a Time version is wearing her traditional black horns in the preview for next week's episode.

While Regina does have a special relationship with Maleficent, she is certainly familiar with Cruella and Ursula.

"In regards to Cruella and Ursula -- [Regina] knows of these women," she said. "They too have a history with her, but not as close or as tight as Maleficent's."

Once Upon a Time airs Sundays at 8 p.m. ET/PT on ABC.

Watch the promo for the winter finale of Once Upon a Time here:

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Once Upon A Time, Television, ABC