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.
Sisters (Once Upon a Time)
When she discovers the truth about Zelena's feelings for Hades' from Regina, Cora suspects that her daughter is being played for a fool by Hades, so she makes a potion from the Lethe that would make Zelena forget about Hades. When Cora finally meets Zelena, this mother-daughter reunion doesn't go smoothly as planned, and even Zelena is on to what they did with the water from the River Lethe they put the spell on, as she turns down her mother's false apology. This leads to a fight between Regina and Zelena but before this escelates, Cora restores their childhood memories of each other and she regretted the way she raised them, and apologizes to her daughters. Now that the sisters have made peace, Cora decides that it's time for her to move on from her unfinished business. As they see their mother walk toward the bridge, the flames from the River of Fire erupt and wrap around her. But the flames die down, the bridge forms, and the gate opens, allowing Cora to move on to Mount Olympus to join her husband, Prince Henry Mills. Later on, Regina gives Zelena her blessing to be with Hades, who is waiting for her at the Underworld Diner for their second date, which Zelena sees as an opportunity to reform him.