Lynda Carter as President Olivia Marsdin
“Supergirl” actor David Harewood teased J’onn J’onzz and President Olivia Marsdin’s (Lynda Carter) dynamic in Season 2, episode 17 of the CW series. The CW

J’onn J’onzz (David Harewood) finds himself clashing with President Olivia Marsdin (Lynda Carter) in Season 2, episode 17 of “Supergirl.”

According to The Hollywood Reporter, J’onn and President Marsdin go head-to-head in the episode after she gives him an order he doesn’t want to do. “She’s not very nice to me,” Harewood said. “We’re quite at odds.”

As to what that order is, Harewood previously revealed to TV Guide that it has something to do with Supergirl (Melissa Benoist).“She’s asking me not to do something, and I do it,” the British actor said. “It’s something involving Supergirl (Melissa Benoist). I disobey the President in order to help Supergirl, [because] at the end of the day she’s his [figurative] daughter, and family first.”

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While Harewood mentioned that J’onn is “going out on a big limb” in the episode, the result of the Martian’s decision remains unknown. “I’m waiting to see what my consequences are,” Harewood said.

President Marsdin made her first appearance in Season 2, episode 3, in which she visited National City to sign her alien amnesty act. However, her motive for signing the act became questionable when it was revealed at the end of the episode that she’s actually an alien posing as a human.

Unfortunately for fans, it seems that next week’s episode won’t disclose President Marsdin’s game plan, as Harewood revealed to The Hollywood Reporter that Carter’s character remains mysterious after the episode. “I still don’t know that she’s not who she says she is. I’m waiting for that to be revealed,” Harewood said.

Apparently, even Benoist is being kept in the dark when it comes to Carter’s storyline. “I want to know what’s going on with her character, too. I don’t even know!” Benoist told The Hollywood Reporter.

“Supergirl” Season 2, episode `17, titled “Distant Sun,” airs on Monday, March 27 at 8 p.m. EST on The CW.