‘Supergirl’ Season 2 Spoilers: David Harewood Teases ‘The Martian Chronicles’ With New Poster

David Harewood teased an upcoming episode of “Supergirl” with a brand new poster.

The key art, which Harewood shared on his Instagram account, shows his character, J’onn J’onzz, standing next to Melissa Benoist’s Supergirl who’s about to take flight. The poster bears the slogan “Worlds Clash. Heroes Unite,” which appears to tease the arrival of yet another White Martian on Earth in Season 2, episode 11.

According to the synopsis for the episode, titled “The Martian Chronicles,” a White Martian named Armek (Terrell Tilford) arrives in National City to take M’gann (Sharon Leal) back to their home planet to face her punishment as a traitor. To keep M’gann safe, Supergirl and J’onn, a.k.a. Martian Manhunter, bring her to the DEO. Things, however, get tricky when they find out that Armek shape-shifted into M’gann. With the DEO’s security compromised, the team realizes that Armek could be disguised as any of them.

In the comics, Armek is a member of the alien super team known as the Hyperclan. Armek and seven other aliens come to Earth, claiming that they are the last survivors of a world that had been destroyed by environmental irresponsibility. Vowing to never allow such a disaster to happen again, the Hyperclan claims they journeyed through space looking out for planets that are in need of saving. This, however, is just a front to turn public opinion against Earth’s more prominent superheroes, particularly the Justice League of America.

When M’gann met J’onn on “Supergirl” for the first time, she told him that she managed to get out of Mars after she was freed by a good-willed female White Martian. Later, however, M’gann admitted to J’onn that she was actually the White Martian who allowed some Green Martians to escape during the conflict between the two Martian races.

“The Martian Chronicles” airs on Monday, Feb. 6 at 8 p.m. EST on The CW. The episode is directed by David McWhirter from a script written by Gabriel Llanas and Anna Musky-Goldwyn.