Cassandra Jean Amell has been cast as Nora Fries in the upcoming DC-CW crossover. Fries is the wife of Mr. Freeze, who has not appeared in any series and has not been cast. Amell has appeared on various shows including Mad Men, Hart of Dixie, and The Middleman.
Fries isn't the only new character appearing during the crossover, as both Lois Lane and Batwoman will show up. Superman will also appear in all three episodes of the crossover.
The three-night Arrowverse crossover begins Sunday, Dec. 9 with The Flash at 8 p.m., then continues on Monday, Dec. 10 at 8 p.m. with Arrow, and concludes on Tuesday, Dec. 11 at 8 p.m. with Supergirl.