The first half of Once Upon a Time Season 3 featured a villain with familial ties to Rumple, so we guess it's only fair that the Big Bad for the second half is tied to Regina. But what can we expect between Regina and her half-sister Zelena, the Wicked Witch of the West?

Lana Parrilla recently talked to TV Guide about what to expect in the battle of Wicked vs. Evil, and it sounds like we're in for an epic ride.

The revelation that Zelena is Regina's half-sister was a major shock to the system for the formerly evil queen, and according to Lana, Regina's first order of business during the year that's been lost is trying to figure out if that revelation is actually true.

Spoiler alert: It is. Regina is not happy to learn that her mother was keeping such a huge secret (shouldn't she know by now that Cora was capable of anything?), and the truth "results in multiple showdowns" with "a lot of learned history... Stuff that is being discovered that Regina didn't know that Zelena is telling her and stuff that Zelena doesn't know about her mother."

The good news? In both the flashback year and present-day Storybrooke, Regina is going to team up with her former foes to take the Wicked Witch down. The extended Charming, Mills, and even 'Stiltskin clan have really made itself into a family of sorts, even if it is quite a dysfunctional one.

For more about what to expect from Regina next season, check out the TV Guide article.

Source: TV Guide

Catch the next episode of Once Upon a Time on Sunday, March 30 at 8 p.m. ET/PT on ABC.


Rebecca Martin is an Associate Editor at Wetpaint Entertainment and our resident Game of Thrones, Breaking Bad, and genre TV expert. Follow her on Twitter and Google+!