An upcoming episode of Once Upon a Time will center on the Wicked Witch (Rebecca Mader) and the details of what made her so green and wicked.

Wicked Witch Similar to Snow White in Storybrooke?

The Wicked Witch was introduced in the final minutes of the Once Upon a Time midseason premiere that aired Sunday night. The iconic villain was shown dropping Regina's (Lana Parrilla) blood into a bottle, noting that while Regina is indeed an evil queen, "wicked always wins," referring to herself.

Once Upon a Time will soon be delving into what made the Wicked Witch, a.k.a. Zelena, so wicked, according to Parrilla.

Rapunzel Episode Similar to Popular Horror Movie?

"There's some real deep-rooted issues there, with this [Zelena] character," Parrilla told E! Online in a Monday report. "It manifests in jealousy, it comes out in envy, but there's some deeper issues there that I can't share with you."

Zelena's big backstory episode is set to occur in episode 16, which is titled It's Not Easy Being Green. Once Upon a Time co-creator Edward Kitsis previously told The Hollywood Reporter that the next few episodes will feature an examination of the Zelena-Regina rivalry.

"When we learn more about the Wicked Witch and her backstory and what happened, we'll understand that what she has against Regina is a global problem and an internal problem," Kitsis said in the report. "Those two are definitely going to get into it."

Once Upon a Time season 3 airs Sundays at 8 p.m. on ABC.

Watch the promo for the next episode of Once Upon a Time here:

Tags
Once Upon A Time, Television, ABC