Mehcad Brooks’ James Olsen is suiting up as DC Comics character Guardian in Season 2 of “Supergirl.”

Brooks gave fans an idea on what James’ new alter ego looks like with an Instagram photo he shared on Tuesday, Oct. 11.  “Knock knock. Guess who? #theguardian #jamesolsen #supergirl #cw #dccomics,” he captioned a cartoon photo of Guardian.

News that James is going to take on a vigilante identity in the sophomore run of the CW series was revealed by executive producer Andrew Kreisberg during a press Q&A on Tuesday.

“James is going to decide that he can no longer sit back and be a sidekick,” Kreisberg said (via TV Guide). “He’s going to decide to become a vigilante. He’s going to become Guardian, complete with the shield.”

In one of the character’s various iterations in the comics, Guardian was a police officer in Metropolis’ Suicide Slum named James Harper who took on the role of a masked vigilante in order to take down the criminals he couldn’t arrest during his day job. Guardian resembles to Marvel’s Captain America, who are both created by Jack Kirby and Joe Simon. Like Captain America, Guardian has no superpowers, but does use the aforementioned indestructible shield.

Kreisberg said that James decides to keep his vigilante identity a secret, so Kara (Melissa Benoist) is apparently not going to be happy once she learns about it.

“It’s going to cause a massive problem in his relationship with Kara,” the exec producer said. “She has her own feelings about vigilantes. It becomes a push and pull of who gets to decide who gets to be the hero.”

James, however, won’t be spending his heroic nighttime activities alone, as Winn (Jeremy Jordan) will be joining him as his sidekick.

“[James has] recruited Winn to help him. Winn is his man in the van,” Kreisberg said.  “He takes this job at the DEO and then is lying to everyone about how he's spending his nights because he's going out with James. [He’s lying] about why he’s exhausted and coming in with a black eye. He says he walked into a door. That’s sort of the fun and excitement of filming these first 10 episodes.”

In a video interview released by The CW last week, Brooks said that he’s hoping that James will assume a superhero identity at some point of the series.

“We had some moments of some heroism with James, and I’d like to see more of that,” Brooks said in the clip. “James actually has super powers in the comics. So sticking to canon, I hope I become Turtle Boy or Elastic Lad.”

“He didn’t have the greatest names,” the 35-year-old actor said of his character’s superhero alter ego in the comics. “Some of the powers are cool, but the names, we can work with that.”

“Supergirl’s” next episode, titled “The Last Children of Krypton,” airs on Monday, Oct. 17 at 8 p.m. ET on The CW. Check out the synopsis for Season 2, episode 2 below:

“CADMUS attacks National City with a kryptonite powered villain who ends up seriously hurting Supergirl. Superman (Tyler Hoechlin) blames Hank (David Harewood) because the kryptonite was stolen from the DEO. Meanwhile, Kara’s first day at her new job doesn’t go as planned after she meets her new boss, Snapper Carr (Ian Gomez).”

Mehcad Brooks “Supergirl” executive producer Andrew Kreisberg revealed that Mehcad Brooks’ James Olsen is suiting up as DC Comics character Guardian in Season 2 of the CW series. Pictured: Brooks attends the 23rd Annual Time for Heroes Celebrity Picnic to benefit the Elizabeth Glaser Pediatric AIDS Foundation at Wadsworth Theater on June 3, 2012 in Los Angeles, Calif. Photo: Getty Images/Imeh Akpanudosen