'Supergirl' season 2 spoilers: Showrunners tease the appearance of Superboy as Cadmus Project secrets unfold

Fans are already excited about the future episodes of “Supergirl,” particularly covering the Cadmus Project, as well as a crossover with “The Flash.” There are also rumors that Superboy will be making an appearance in Season 2.

According to “Supergirl” showrunners, more details about the Cadmus Project, a secret state-funded research team focusing on genetics, will be revealed in the second season. There will potentially be a number of Cadmus characters coming out as well, including Superboy.

Executive producer Andrew Kreisberg said that they cannot share anything about Superboy in the meantime. Cadmus will not be appearing in the first season, but it will certainly be included in the next.

“It's going to remain more of an evil, specter-y thing that's out there, but it's definitely something that we're going to pursue. It’ll be something that gets saved for season 2. . Cadmus has such a rich history in the comics and the animated shows. There’s so much there to mine. It’ll definitely be part of season 2,” Kreisberg told IGN.

In the previous episode, titled “Manhunter,” Cadmus was mentioned, hinting that there will be more about the topic in the upcoming storyline, writes Comic Book. Alex Danvers and Martian Manhunter were sent on a mission to look for Cadmus and rescue Jeremiah Danvers, who may be contained there.

In the comics, Superboy was cloned from the DNA of Paul Westfield, a Cadmus Director, together with the electromagnetic auro that made Superman invulnerable. Before, the TV versions of Superboy portrayed him as a young Clark Kent who was slowly developing into Superman. It will be the first time that the Cadmus will be linked to Superboy on television. Cadmus was supported by the American government to possibly counter metahuman threats and powers. Project Cadmus first appeared in DC Comics in 1970, created by Jack Kirby.

Season 2 will showcase more about Project Cadmus as well as follow Supergirl’s tendency to function with Superman. There will expectedly be more clones being spawned by the secret research group.

The next episode of “Supergirl” will air on Apr. 11 on CBS. More updates and details are expected soon.

Check out the trailer for the crossover episode of "The Flash" and "Supergirl."