Why yes, it does bear repeating that Supergirl got off to a flying start with this past week’s premiere, and there’s loads of DC goodness int store before we ever get to that four-way crossover. Find out for yourself, as new synopsis teases the introduction of both Miss Martian, and DC gamemaker Roulette.

You’re warned of light spoilers through the coming weeks of Supergirl Season 2, but while Tyler Hoechlin’s Superman is expected to take off with this coming Monday’s “The Last Children of Krypton,” a slew of DC characters lie ahead. The CW has released a full synopsis for Season 2's fourth episode, “Survivors,” featuring Agents of S.H.I.E.L.D. star Dichen Lackman’s Roulette and her alien fight club, Sharon Leal’s Miss Martian, and Chris Wood’s Mon-El:

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.

That said, it’s equally likely that Miss Martian will debut during the third episode, “Welcome to Earth” (also featuring Lynda Carter), as perhaps hinted below:

LYNDA CARTER (“WONDER WOMAN”) LANDS IN NATIONAL CITY AS PRESIDENT OLIVIA MARSDIN

An attack is made on the President (guest star Lynda Carter) as hot-button, alien vs. human rights issues heat up in National City. Supergirl (Melissa Benoist) and the DEO are assigned to protect the President and bring in the responsible party. Alex (Chyler Leigh) teams up with Detective Maggie Sawyer (Floriana Lima) to investigate the case while Kara searches for a recently escaped Mon-El (Chris Wood), who she fears may be the alien behind the assault.

In the meantime, check out the trailer for this coming Monday’s “Last Children of Krypton” below, and stay tuned for a first look at Miss Martian in action.

 

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