Lex Luthor is coming to CW's Supergirl season four as a recurring character, according to the show's executive producers Robert Rovner and Jessica Quellner.
"We're beyond excited to introduce iconic villain, Lex Luthor, to Supergirl and to weave him into our story this season," said Rovner and Queller in a joint statement (via The Hollywood Reporter). "We’ve talked about having Lex on the show since its inception and we’re excited to have him finally arrive. We can’t wait for him to shake things up in National City and watch him go toe to toe with not only Supergirl, but his sister Lena Luthor (Katie McGrath)."
Luthor has previously been mentioned on the show - a young Lex Luthor appeared in Supergirl's second season, and the modern, adult character is said to be incarnerated with 32 consecutive life sentences after being caught by Superman. Off-screen and in prison, Luthor orchestrated an assassination attempt against his sister Lena Luthor.
THR reports that Luthor casting for the adult Luthor is underway. Tyler Hoechlin's Superman will appear in Supergirl's December "Elseworlds" crossover with The Flash and Arrow, which will also introduce Bitsie Tulloch as Lois Lane, though Lex Luthor is not expected to appear in that event.
Supergirl airs Sundays on the CW.