"Supergirl" will have to prove herself when she debuts on the small screen for the first time. Part of the journey is going against an impressive roster of supervillains, who are out to wreck havoc. Kara Zor-El will find herself against even tougher opposition as the "Supergirl" executives casts "Transporter" star Chris Vance as Kryptonian Non and the criminal Toyman joins the stacked villain team.

According to The Hollywood Reporter, Vance has been tapped to play the famed "Superman" antagonist, who is set to become "Supergirl's greatest threat." In the comic books, Non is a former Kryptonian scientist, who found himself lobotomized and turned into a dangerous savage after learning of Krypton's demise.

It's possible that the character's history may be tweaked a little in the upcoming television series. During the "Supergirl" Television Critics Association press tour in August, the producers talked a bit about Non, saying that the team has a ""slightly different take on the character," according to a previous report from The Hollywood Reporter.

Another well-known villain, Toyman, will have a role in "Supergirl," a report from IGN revealed. Executive producer Ali Adler also addressed the colorful character during the recent New York Comic-Con, saying that Toyman will have a significant connection to another character that fans can look forward to.

"There's definitely going to be a relationship between Toyman and Jeremy Jordan's character, Winn Scott," Adler stated. "The mystery is the nature of the relationship, or even whether Jordan is Toyman."

During the panel, the executive producer also mentioned that there are more villains slated to show up as every week will bring a nemesis. One of these characters is Peter Facinelli's Maxwell Lord, who will offer a complicated perspective on the battle of good versus evil.

"I don't think he's evil in that sense," Facinelli told Comic Book during the NYCC. "It's just that there's very clear good and bad and what Maxwell brings is a kind of a gray area. Don't always be too sure what is good or bad."

He added, "I think his perspective is that humanity should save themselves and that these outside sources - aliens, aka superheroes and villains - are just interfering with the problems that we need to face, and the problems that we're facing as humanity are way bigger than two superheroes battling it out."

"Supergirl" will debut on Monday, Oct. 26, on CBS.