South Korean actor Ma Dong-seok (Train to Busan) is set to join Angelina Jolie and Kumail Nanjiani in Marvel's The Eternals, Collider has confirmed.

Chloe Zhao (The Rider) is directing from a script by Matthew Firpo and Ryan Firpo, and Marvel's Kevin Feige is producing The Eternals, which is based on the 1976 comic book series created by Jack Kirby. The comic follows super-powered and near-immortal beings known as Eternals and a rival group known as the Deviants that were created by cosmic beings called Celestials.

Jolie is likely playing an Eternal named Sersi, while Nanjiani and Ma's roles are being kept under wraps.

The Eternals is expected to feature Marvel’s first gay superhero, which is exciting, as the MCU has only benefitted from increased diversity. According to Feige, the plan is not only to introduce the Eternals as a full ensemble Guardians of the Galaxy-style, but to also lean into what made Kirby's run in the 1970s so complex. Feige told us during the Captain Marvel press tour:

"Everything after Endgame, and after Spider-Man: Far From Home, will be different and be unique, as we try to make every film. But seeing returning characters is certainly something we're gonna do and want to do. But also introducing characters that the majority of the world has never heard of, much like Guardians, much like Avengers before we made Avengers. And there are lots of them. Eternals are one group, but we like the idea of introducing an ensemble, doing an ensemble movie from the start, as opposed to building up as we did with the first Avengers. More like Guardians, not tonally, but in terms of introducing a new group of people. You were asking about '60s, and '70s before. Jack Kirby did an immense, amazing epic with Eternals that spans tens of thousands of years, and that's also something we haven't really done, which is why that among many other things post-Endgame, we find appealing."

The Eternals is one of two Marvel movies that will go before cameras this year along with Black Widow, which is now slated to star Scarlett Johansson, Florence Pugh, David Harbour and Oscar winner Rachel Weisz.

Ma previously starred in Jee-Woon Kim's action-packed western The Good the Bad the Weird. He's represented by Gersh, and Marvel had no comment regarding the news, which was first reported by TheWrap.