After years of teasing his arrival, The CW's Supergirl will finally introduce its take on Lex Luthor. Played by Two and a Half Men star Jon Cryer, this version of Luthor and his so-far unseen role in the Arrowverse series are set to be explored in the upcoming episode "O Brother, Where Art Thou?", along with his plans for Metropolis, Supergirl and presumably his arch-enemy Superman.Cryer spoke about the role during an interview with AP Entertainment News. "The whole thing came about oddly," Cryer recalled about taking on the role. "The producers wanted to try something a little different. The comics' Lex Luthor is a sociopath... They wanted someone who could employ this, part of what I was known for as an actor was this likability. And it was like, what if there was somebody who employs that in the service of being a sociopath?"RELATED: Supergirl: Cryer's Lex Luthor Unleashes His Plan in First Footage

According to the description of the episode, which airs this Sunday,

Secretly furloughed from prison due to failing health, Lex Luthor (guest star Jon Cryer) visits his sister, Lena (Katie McGrath), to seek her help finding a cure. Savvy as ever, Lena is suspicious of Lex's motives but when she's faced with a life and death situation, she must decide how she truly feels about her brother. Meanwhile, Supergirl (Melissa Benoist) and J'onn (David Harewood) face off against Manchester Black (guest star David Ajala). James' sister Kelly (guest star Azie Tesfai) comes to town.

Airing Sundays at 8 p.m. ET/PT on The CW, Supergirl stars Melissa Benoist as Kara Danvers, David Harewood as Martian Manhunter, Mehcad Brooks as Jimmy Olsen and Chyler Leigh as Alex Danvers.