The CW Reveals the Backdrop for This Year's Crossover Event, ELSEWORLDS

CW has revealed the backdrop for this year's crossover event. The three-night event kicks off Sunday, December 9 on the network. SUPERGIRL, ARROW, and THE FLASH are featured in this crossover, "Elseworlds."

Also included in the event are Jeremy Davies, Ruby Rose, Tyler Hoechlin, Elizabeth Tulloch, and Cassandra Jean Amell.

Jeremy Davies will play John Deegan, a doctor at Arkham Asylum for the Criminally Insane in Gotham City, who might just be crazier than the inmates he treats. His machinations will draw Green ARROW (Stephen Amell), THE FLASH (Grant Gustin) and SUPERGIRL (Melissa Benoist) to Gotham City.

The event will also introduce Ruby Rose as Batwoman, who patrols the streets of Gotham as a highly trained street fighter primed to snuff out the failing city's criminal resurgence. But don't call her a hero yet - in a city desperate for a savior, Kate must overcome her own demons before embracing the call to be Gotham's symbol of hope.

Tyler Hoechlin will reprise his role as Superman in the event. The event also introduces Elizabeth "Bitsie" Tulloch as Lois Lane and Cassandra Jean Amell as Mr. Freeze's wife, Nora Fries.