Actor Jesse Rath has been upgraded to series regular for season 4 of CW's Supergirl, according to Deadline.
Rath plays Brainiac 5, a super-intelligent member of the Legion of Super-Heroes from the future. Brainiac appeared in several episodes of Supergirl season 3.
“We love the character of Brainiac-5 and can’t imagine anyone but Jesse Rath in the role," said executive producers Robert Rovner and Jessica Queller. “He brings such fun, heart and brilliance to Brainy and we’re so excited he’s joining the cast as a series regular for season 4. We have a lot of great Brainy stories to tell.”
In comic books, Supergirl and Brainiac 5 have been romantically involved in some stories where Supergirl joins the Legion.
No premiere date for Supergirl season 4 has been set.