'Supergirl': First Look at Saturn Girl in "Wake Up" Photos

The CW has released the official promotional photos for "Wake Up," the upcoming seventh episode of Supergirl's third season.

The episode will see the return of Mon-El (Chris Wood), the Daxamite prince Supergirl came to love last season who was forced to leave Earth earth after Lena Luthor's device stopped the Daxamite invasion by putting lead -- toxic to Daxamites -- into the atmosphere.

Mon-El's absence has been difficult for Kara (Melissa Benoist) thus far this season, but fans who are hoping that Mon-El's return will bring a reunion for "Karamel" might not want to get their hopes up. Benoist recently told ComicBook.com that their reunion isn't exactly what fans will expect.

Supergirl 03x07 Gallery

"In Episode 7, it's pretty mysterious." Benoist said. "I think this season, we've really delved into a different tone, a different atmosphere for Kara. She's really figuring out how to own her alien-ness, if you will, and in turn I think she's finding her womanhood at the same time through grief and that grief is apparent even in the coloring of the show, so I think it's a long-- it won't be the reunion you expect."

The episode will also see the introduction of at least one member of the Legion of Super-Heroes, Saturn Girl. The photos give us our first look, albeit in a hospital bed, at British-born Bollywood star Amy Jackson as Imra Ardeen as the heroine who is described by DC Chief Creative Officer Geoff Johns as "the heart and soul of the Legion of Super-Heroes." And Saturn Girl and Mon-El might not be the only heroes coming to Supergirl. The "tubes" on board the Legion ship are at least five in number meaning there could be even more to look forward to next week.

Supergirl airs Mondays at 8/7c on The CW.