All alien refugees on Earth, both good and bad, should be worried about Project Cadmus.

In an interview with Entertainment Weekly, executive producer Andrew Kreisberg revealed that the governmental research lab run by a group of scientists is actually one of the two main villains in Season 2 of “Supergirl.”

“They’re the big bad of the first part of the year,” Kreisberg said of Project Cadmus before adding that a second big bad will be introduced later in the season.

Kreisberg said that the scientists behind Project Cadmus are dedicated to eliminate all forms of alien life on Earth — not only the alien escapees from Fort Rozz but also the superhero ones like Supergirl, Superman (Tyler Hoechlin) and Martian Manhunter (David Harewood).

“They don’t care that you’re wearing a cape one day,” the exec producer said of the people behind Project Cadmus. “So their goal is to eliminate the J’onns and the Supermans and the Supergirls of the world along with all the other evil aliens that are out there — they don’t make that distinction, which creates an interesting problem for our good guys.”

Kreisberg added that the scientists behind Project Cadmus are a “collection of very bright, patriotic people who truly believe what they’re saying, and that makes them even more dangerous.” The group vows to eliminate alien life on Earth, because they believe that ever since these aliens started coming to Earth, the planet has become this “free for all, and human beings are about to get knocked off the food chain.”

In Season 2, episode 2, titled “The Last Children of Krypton,” Project Cadmus attacks National City with kryptonite powered villain Metallo (Frederick Schmidt) who ends up seriously hurting Supergirl (Melissa Benoist).

In the following episode, titled “Welcome to Earth,” President Olivia Marsdin (Lynda Carter) becomes the target of an attack after signing an alien amnesty act into law. Since the new executive order goes against Project Cadmus’ primary goal, it won’t be surprising if the group of scientists is revealed to be the one responsible for the assault.

“Supergirl” Season 2 premieres on Monday, Oct. 10, at 8 p.m. ET on The CW.