Entertainment Weekly reported Mitchell’s character may be evil and has ties within Storybrooke and to “Frozen” characters Anna and Elsa. Show creators Adam Horowitz and Edward Kitsis are not revealing much about Mitchell’s character. Horowitz tweeted, “Thrilled to welcome Elizabeth Mitchell to #OnceUponATime family as #nospoiler -- so happy to work together again! Hope to see ya in fall!”
The movie which was released at the end of 2013, was an enormous hit for Disney, launching the song “Let it Go,” sung by Idina Menzel, who voiced Elsa. The story was inspired by Hans Christian Andersen’s “The Snow Queen.” Kristen Bell (“Veronica Mars”) was the voice of Elsa’s sister Anna and Jonathan Groff (“Glee”) played mountain man Kristoff. The pair set off to find runaway Elsa after she inadvertently created an eternal winter in their town of Arendelle.
The “Frozen” storyline was teased in the last moments of the season finale, with viewers seeing Elsa’s back and signature braid as she rose up from the time portal, removed her glove and froze the ground beneath her feet. The story will pick up after the movie left off. The series recently cast Georgina Haig (“Fringe”) as Elsa, newcomer Elizabeth Lail as Anna and Scott Michael Foster (“Greek”) as Anna’s boyfriend Kristoff.
Mitchell appeared in “Revolution,” which was canceled at the end of its second season earlier this year. She also did a stint on “V” before returning for the final season of “Lost.”
“Once Upon a Time” will return in the fall Sundays on ABC.