Sisters of a feather do not flock together.

On last night’s episode of Once Upon a TimeSeason 3, Episode 13 (“Witch Hunt”) — we learned that the Zelena (Rebecca Mader) is the half-sister of Regina (Lana Parrilla). Were we shocked? No. It wasn’t hard to guess that the Wicked Witch and the Evil Queen were related. But we do have to admit that we’re shocked at just how different these ladies are!

“She wants to hurt people for different reasons than the Evil Queen wanted to kill Snow White,” Lana told E! Online. “Their costumes are very similar, but their intentions are very different, like they’re fighting for different causes. She wants to hurt people for different reasons. She’s wicked.” Oh, and she’s totally jealous of Regina, too.

If you ask us, it’s pretty easy to tell the difference between these sick sisters. The bad things Regina has done all had the end goal of her being happy with a family and seeking revenge on those who stood in her way. Zelena seems to be fueled by pure hatred. Regina’s never done anything to Zelena, but it sounds like greenie is angry that Cora decided to keep Regina and not throw her away like she was. Why does she hold Regina accountable for this? Isn’t her beef with Cora? Zelena seems to want everyone around her to be just as miserable as she is. But what happens when that goal is completed? Can Zelena ever actually be happy?

Do you think Zelena will be successful in hurting Regina this season? Hit the comments and let us know!

Once Upon a Time airs Sunday nights at 8 p.m. ET on ABC.

Carson Blackwelder is an Associate Editor at Wetpaint Entertainment. Follow him on Twitter and Google+!