Former "Sons of Anarchy" star Chris Browning will guest star as Ben Krull, a DC Comics supervillain who becomes Reactron when he dons his armored suit powered by nuclear energy, on the upcoming first season of CBS' "Supergirl."

According to The Hollywood Reporter, Browning's Ben Krull will first appear in the third episode of the season. In that episode, Reactron will head to National City after failed attempts to destroy Superman, in order to exact revenge on the Man of Steel by killing his cousin, Supergirl. Though intended as a guest star in his first appearance, he reportedly has "a strong potential" to recur later on.

The show centers on Kara Zor-El (Melissa Benoist), a Kryptonian stranded on Earth following the destruction of her home planet Krypton. Assuming the name Kara Danvers, she decides to come out of hiding at the age of 24 and really use her super abilities for good.

"Supergirl" arrives on CBS on October 26 at 8:30 p.m. EST. Developed by producers Greg Berlanti, Ali Adler and Andrew Kreisberg, the series stars Benoist, Chyler Leigh, David Harewood and Calista Flockhart.