Wicked Witch of the West
The Wicked Witch appears as the main antagonist of the second half of Season Three of "Once Upon a Time" played by Rebecca Mader. This version goes by the name of Zelena (which means "green" in some Slavic languages). Zelena is discovered to be the daughter of the Queen of Hearts/the Miller's Daughter/Cora (Barbara Hershey/Rose McGowan), making her the older, long-lost half-sister of Regina the Evil Queen (Lana Parrilla). Zelena visited Rumplestiltskin (Robert Carlyle) and learned from him how to control her own powerful magic. Her storyline revolves around her efforts to create a time-travel spell that will allow her to go back and prevent the birth of Snow White's mother, Ava, who informed Prince Leopold (Cora's fiancé) that Cora was with child to sabotage Cora's attempts to infiltrate the royal family (before she can ruin Zelena's life, and thus Zelena would be raised as royalty. But despite Zelena's efforts to create the deadly time portal Emma Swan (supposedly the only wielder of light magic powerful enough to oppose her) her plans are halted when the Evil Queen masters light magic in time to oppose her (although her time-travel spell is completed, it takes effect after her presumed death, transporting Emma and Captain Hook (Colin O'Donoghue) back to before the original curse was cast). She was later thought to have been killed by Rumpelstiltskin.
Once Upon a Time (season 5)
On June 9, 2015, it was announced that Rebecca Mader and Sean Maguire had been promoted to series regulars for the fifth season, portraying their characters Zelena / Wicked Witch of the West and Robin Hood, respectively, while it was later revealed that Michael Socha would not be returning as a series regular as Will Scarlet / Knave of Hearts although further appearances as a recurring or guest star were hinted. Adam Horowitz confirmed via Twitter that Emilie de Ravin would return as Belle, while Vine Report confirmed the return of Jennifer Morrison as Emma Swan. On June 26, 2015, Josh Dallas confirmed his return as Prince Charming / David Nolan and Horowitz confirmed that there would be ten series regulars for the season. During Comic-Con 2015, Ginnifer Goodwin, Lana Parrilla, Colin O'Donoghue and Robert Carlyle were confirmed to return as Snow White / Mary Margaret Blanchard, Evil Queen / Regina Mills, Captain Killian "Hook" Jones and Rumplestiltskin / Mr. Gold respectively, while Morrison's character was confirmed to take on the moniker "Dark Swan". Jared S. Gilmore also returned as Henry Mills.
On June 26, 2015, it was revealed that Sinqua Walls would return as Lancelot. On July 1, 2015, it was announced that Liam Garrigan would play King Arthur during the first half of the season, while Gabe Khouth and Lee Arenberg confirmed via social media that they would be returning as Sneezy / Tom Clark and as Grumpy / Dreamy / Leroy respectively. On July 10, Beverley Elliott and Keegan Connor Tracy confirmed via their Twitter accounts that they would be returning as Widow Lucas / Granny and Blue Fairy / Mother Superior respectively while it was also confirmed that Elliot Knight, Joana Metrass and Andrew Jenkins had been cast as Merlin, Guinevere and Percival respectively.