Supergirl seems to be front-loading Season 2 with DC goodness, between Superman and Wonder Woman star Lynda Carter, and that’s just fine by us. Latest to join the CW transplant are Sharon Leal’s Miss Martian and Dichen Lachman’s Roulette, both of whom are fully revealed in the new “Survivors” trailer.

Following this week’s “Welcome to Earth,” Supergirl offered a much better glimpse of a transformed M’Gann with the trailer for Season 2's fourth outing. In addition, the teaser also offers our first look at The 100 and Agents of SHIELD star Dichen Lachman as DC gamemaker roulette, while the first synopsis for “Survivors” reads:

HANK AND M’GANN GET TO KNOW EACH OTHER; AN ALIEN FIGHT CLUB RUN BY ROULETTE GRABS SUPERGIRL’S ATTENTION

When Kara (Melissa Benoist) and Alex (Chyler Leigh) investigate the murder of an unregistered alien, the trail leads to an alien fight club run by Roulette (guest star Dichen Lachman), the ringmaster who commands aliens to fight in mortal combat for the entertainment of rich humans.

While trying to stop the fighting, Supergirl and Martian Manhunter find themselves up against a surprising opponent. Meanwhile, Hank (David Harewood) is thrilled to have found another Martian and tries to get to know M’Gann (guest star Sharon Leal) better. Supergirl takes Mon-El (Chris Wood) under her wing and begins to train him.

We’ll have a longer trailer and first photos soon, but in the meantime, check out the latest Supergirl again above, and stay tuned for more on Miss Martian’s complete debut.