Cloverfield and Pure Genius alum Odette Annable has joined the third-season cast of The CW's Supergirl in the role of Reign.

Warner Bros. Television confirms that "Reign will be the big bad of Season 3, as part of an exciting interpretation of the infamous World Killer storyline from the pages of the DC Comics."

"Greg [Berlanti] and I have wanted to work with Odette for years," said executive producer Andre Kreisberg. "We are beyond excited to have her join our cast in the scary, powerful and heartbreaking role of Reign." This is one that's objectively and undoubtedly a Supergirl villain -- something that the show has often found in short supply as fans have been treated to shared Superman/Supergirl villains, or even just Superman villains reinvented for the TV show.

Introduced in 2012, Reign is a Worldkiller and her origin is a mystery even to her. All she knows about herself is her name, that she is a Worldkiller, and that Krypton and Earth hold the answers for her questions about her origin. In the comics, she attempted to find her answers on Krypton, only to arrive and find it already destroyed. She tracked down the remains of Argo City, and ultimately made her way to Earth to face off with Supergirl.