"There's something you need to see... he's mutated."

The first teaser for next week's "Supergirl" opens like a zombie movie, but it's quickly revealed that the episode will feature the debut of more than one new face. In addition to James Olsen donning his Guardian armor for the first time, longtime Superman foe the Parasite arrives in National City as well.

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The pink, blobby, power-sucking bad guy made his comic book debut in 1966's "Action Comics" #340. His original form was more human than his later, more dangerous and longer-lived incarnation, which saw the character evolve -- or devolve -- into a decidedly alien body. His powers are straightforward: cursed with an insatiable hunger, the Parasite feds by absorbing the life force of others. When he finds a superhuman -- Supergirl, in this case -- he absorbs their powers as well. It remains to be seen if this is the case for the television incarnation, though judging by the brief appearance in the video below, it would appear that this Parasite is following his comic book brethren's M.O. fairly closely.

THE GUARDIAN DEBUTS IN NATIONAL CITY — The Guardian debuts to lend a hand after a parasite alien drains Supergirl (Melissa Benoist) of her power. Mon-El (Chris Wood) considers a less than desirable new career which then leads him to contemplate his motives. Alex (Chyler Leigh) struggles with a new reality. Andrew Kreisberg and Caitlin Parris wrote the script based on the story by Greg Beranti. The episode was directed by Larry Teng (#206). Original Airdate 11/14/2016.

Starring Melissa Benoist as the Girl of Steel, “Supergirl” airs Mondays at 8 pm ET/PT on The CW. The series also stars David Harewood as Martian Manhunter, Mehcad Brooks as Jimmy Olsen, Chyler Leigh as Alex Danvers and Jeremy Jordan as Winn Schott and features appearances by Calista Flockhart’s Cat Grant as well as Tyler Hoechlin’s Superman.