The crossover event stars Stephen Amell as Oliver Queen/Green Arrow, Melissa Benoist as Kara Danvers/Supergirl, Grant Gustin as Barry Allen/The Flash along with guest stars Ruby Rose as Kate Kane/Batwoman, Tyler Hoechlin as Clark Kent/Superman, Elizabeth Tulloch as Lois Lane, Jeremy Davies as Dr. John Deegan, and Cassandra Jean Amell as Nora Fries, the wife of the classic DC comics villain Mr. Freeze.
The 100 actor Bob Frazer has signed on for a guest-starring role as Roger Hayden, also known as supervillain Psycho-Pirate.
The CW recently set the dates for the annual Arrowverse crossover, with this year’s storyline heading to Gotham City, a place previously off-limits to The CW.
In addition to Davies and Frazer, Cassandra Jean Amell has also signed on to appear in the crossover as Nora Fries, the wife of the classic DC comics villain Mr. Freeze.