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.
Tiera Skovbye
Skovbye's first substantial role was as the 10-year old Jane on the drama series "Painkiller Jane" in 2007. Skovbye has also appeared in a number of television films, most notably Lifetime's "The Unauthorized Saved by the Bell Story" in which she played Elizabeth Berkley. In early 2017, she began playing the recurring role of Polly Cooper on The CW teen drama series "Riverdale". Skovbye played the recurring role of Robin, the daughter of Zelena and Robin Hood, during the seventh season of "Once Upon a Time".