Melissa Benoist as Supergirl
Jessica Queller and Robert Rovner have joined Andrew Kreisberg as co-showrunners for “Supergirl” Season 3, which stars Melissa Benoist in the title role. The CW

Jessica Queller and Robert Rovner have been promoted to co-showrunners alongside co-creator Andrew Kreisberg ahead of the Season 3 premiere of “Supergirl.”

According to Deadline, Queller and Rovner’s promotion came about after series co-creator Ali Adler vacated her position as co-showrunner earlier this year. Adler will remain an executive consultant on the Melissa Benoist-led series.

Queller, whose previous series credits include “Felicity,” “Gilmore Girls” and “Gossip Girl,” joined the CBS-turned-CW series midway through Season 1 as co-executive producer. Besides being promoted to co-showrunner, she’s now also promoted to executive producer.

READ: Will Calista Flockhart return as series regular for Season 3 of “Supergirl”?

Rovner, meanwhile, joined “Supergirl” as consulting producer in the middle of its freshman run. He was then promoted to executive producer at the start of Season 2. Rovner’s previous work includes “Private Practice,” “Crossing Jordan,” “Dallas” and “American Dreams.”

Besides Queller and Rovner, who will start serving as co-showrunners in the 2017-2018 season, other “Supergirl” executive producers are Kreisberg, Greg Berlanti and Sarah Schechter.

Plot details about Season 3 of “Supergirl” are being kept under wraps, but it was announced earlier this month that Odette Annable has joined the show to play the series-regular role of season’s big bad, Reign.

“Greg and I have wanted to work with Odette for years. We are beyond excited to have her join our cast in the scary, powerful and heartbreaking role of Reign,” Kreisberg said in a statement to Entertainment Weekly.

According to The Hollywood Reporter, Reign will be introduced as part of “Supergirl’s” interpretation of the famed World Killer storyline from the DC Comics. In the comics, Reign is one of the five Worldkillers, a.k.a. genetically engineered Kryptonian weapons created by Supergirl’s biological father, Zor-El. Just like Supergirl, Reign possesses superhuman strength and speed, as well as the ability to fly. Created by Michael Green, Mike Johnson and Mahmud Asrar, Reign first appeared in print in March 2012.

It was also revealed last month that Floriana Lima, who plays Maggie on the series, will no longer return as series regular in Season 3.

“Supergirl” Season 3 premieres on Monday, Oct. 9 at 8 p.m. EDT on The CW.