AceShowbiz - Billie Eilish is now adding acting to her resume. The "Happier Than Ever" hitmaker, who already has an Oscar, makes a surprise acting debut on Donald Glover's horror/thriller series "Swarm".

The 21-year-old singer will mark her arrival in acting with a previously unannounced role on the new Amazon Prime Video series. The show is co-created by the Childish Gambino and Janine Nabers.

Billie is just one of many unexpected supporting players who crosses paths with Dominique Fishback's Dre. In a new clip from the show, released on Prime Video's Twitter, a blonde-haired Billie can be seen in character hypnotically talking to Dre.

The series follows a young woman named Dre whose obsession with one of the world's biggest pop stars as well as an unexpected trauma involving her sister, Marissa (Chloe Bailey), sets her on a dark journey across the country.

As Dre continues on her increasingly violent path, she encounters characters played by Damson Idris (Marissa's boyfriend, Khalid) as well as Byron Bowers, Kiersey Clemons, Paris Jackson, internet personality Rickey Thompson, Rory Culkin and "American Auto" breakout X Mayo.

Though Billie has appeared in several music documentaries and has voiced a version of herself for "The Simpsons" short, "When Billie Met Lisa", "Swarm" is the "Bad Guy" singer's first fully scripted role as an actor.

The idea to add her to the ensemble came from casting director Carmen Cuba, as per Entertainment Tonight, who knew that the pop star wanted to get into acting. The website goes on to state that for Donald, casting Billie provided an opportunity to play up the "meta commentary about fandoms and followers."

"We were really interested in creating an antihero story," showrunner Janine recently told Vanity Fair. She and Donald took inspiration from characters like "Mad Men" character Don Draper and "The Sopranos" character Tony Soprano, but created a new version "through the lens of a black, modern-day woman."