Zelena (Once Upon a Time)
In December 2013, Rebecca Mader was cast as the Wicked Witch of the West. She made multiple appearances during the second half of season three and was promoted to a series regular for the show's fifth season. The role of the Wicked Witch of the West was written specifically for Rebecca Mader. It was announced that the writers had chosen not to continue with Zelena's storyline and Mader would not be returning for the seventh season of the show. However, Mader later revealed that she would be returning for multiple season seven episodes.
Kansas (Once Upon a Time)
It appears that Dorothy has won over the other witches, except for Zelena, who now has become more envious of this latest visitor to their world (as evidenced by her green skin returning), and as she watches from the well, Glinda comes over to talk to her. However, Zelena, having read the book of prophecies, believes that Dorothy will replace her, saying that she is the greatest evil and a threat to Oz. Later on, Zelena surprises Dorothy at the well, where Zelena's green skin returns, making her evil as ever and vows to threaten Dorothy by creating a fireball that she will aim at her. This prompts a confused Dorothy to take a bucket of water from the well and throw it at her, causing Zelena to melt. Dorothy then runs and tells Glinda what had happened, but Glinda tells her that what she did to Zelena was the right thing to do; it turns out that Zelena was the evil threat all along. Glinda then offers Dorothy a chance to join the council of witches, but Dorothy turns her down and says she's sorry and wants to go home. Glinda tells her that the Wizard (who she believes has returned to his normal form) will return her to Kansas.