Indigo and Master Jailer are heading to National City and CBS’ superhero drama Supergirl.

Laura Vandervoort will play the Indigo Master Jailer 2-shotrecurring role of Indigo, described as a living, strong-willed supercomputer that was sentenced to Fort Rozz after turning against the people of Krypton. Now on Earth, Indigo will let nothing stand in her way. At Comic-Con, Vandervoort, who played Supergirl/Kara Zor-El on Smallville, disclosed that she was in negotiations to make a cameo appearance on CBS’ Supergirl.

Jeff Branson (The Young And The Restless) has been cast in the recurring role of Master Jailer. As the forceful and unrelenting jail guard on Fort Rozz, Master Jailer showed no mercy. Now on Earth, he is hellbent on catching all of the Fort Rozz escapees and brutally bringing them to justice.

The announcement was made today during WBTV’s Supergirl session at the Television Critics Association Winter 2016 Press Tour on the Warner Bros. Studios lot.

Co-showrunner Andrew Kreisberg also announced that episode 13 will be an adaptation of the Alan Moore and Dave Gibbons 1985 Superman comicbook For The Man Who Has Everything, but with a Supergirl angle. The name of the episode will be “For The Girl Who Has Everything” In the comic book, Superman is in a coma, no thanks to alien tendrils around him. He dreams of happy life on his destroyed planet of Krypton, married with children. EP Greg Berlanti acknowledged that when Supergirl’s friends find her in the episode, she’s in a vegetative state. Berlanti said when Kreisberg boarded Supergirl, he wanted to head the narrative in a direction toward the Alan Moore and Dave Gibbons comic book to “that moment in a journey where Kara had to fight for the life she had back.”

Supergirl stars Melissa Benoist as Kara Danvers/Kara Zor-El/Supergirl, Mehcad Brooks as James Olsen, Chyler Leigh as Alexandra “Alex” Danvers, Jeremy Jordan as Winslow “Winn” Schott, with David Harewood as Hank Henshaw/J’onn J’onzz and Calista Flockhart as Cat Grant.

The series hails from Berlanti Productions in association with Warner Bros. Television. It airs Mondays at 8 PM/7C on CBS.