The CW is bringing in an iconic familiar foe in season four.

Lex Luthor will be introduced in the current season of the DC Comics-inspired drama starring Melissa Benoist. Casting for what will be a recurring role is underway. The character was last seen in Zack Snyder’s (or Joss Whedon’s) Justice League, played by Jesse Eisenberg and on WB TV’s Smallville played by Michael Rosenbaum.

Superman’s greatest nemesis will come to Supergirl sometime after the massive crossover crossover; he has not yet even been cast, and will not appear in the event.

“We’re beyond excited to introduce iconic villain, Lex Luthor, to Supergirl and to weave him into our story this season,” Executive Producers Robert Rovner and Jessica Queller said in a statement.“We’ve talked about having Lex on the show since it’s 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.”

This means that the Arrowverse take on Luthor will come to TV just weeks after the first appearance of the shared superhero universe’s first look at Lois Lane.

Lex’s sister Lena (Katie McGrath) has been a part of the show since season two, when she became a stand-in for Calista Flockhart’s Cat Grant, who left when the show moved production from Los Angeles to Vancouver.

The move to introduce Lex also follows the Elseworlds crossover revealing that Superman will don his iconic black suit. It would seem that Supergirl is full steam ahead on crafting its own incarnation of the Superman sector of DC Comics.

Funny enough, Lex and Lois were supposed to headline a Gotham-style prequel series called Metropolis, which would tackle the City of Tomorrow but not revolve around Superman himself. That series, which was supposed to air on the DC Universe app, was delayed. If Lex and/or Lois go any further than they have on Supergirl, it might be an indicator that the show is unlikely to move forward.