The upcoming Han Solo movie that will chronicle the early years of Star Wars’ famous rogue still doesn’t have an official title, but it does have a cast that’s growing quickly with the addition of some familiar faces — including the Mother of Dragons herself.

Game of Thrones actress Emilia Clarke, who plays the dragon-friendly Daenerys Targaryen on the hit HBO series, has joined the cast of the still-untitled Han Solo movie in an unidentified role. She’ll appear alongside previously announced Han Solo actor Alden Ehrenreich (Hail, Caesar!) and supporting cast member Donald Glover (Community, Atlanta), who portrays a young Lando Calrissian.

The casting announcement was made on StarWars.com, and offered few details about the role Clarke will take on in the film, which is expected to chronicle not only Han Solo’s early years, but also his first encounter with Chewbacca, the Wookiee who would become his best friend and copilot. The announcement simply indicated that Clarke’s character will “round out a dynamic cast of characters that Han and Chewie will encounter on their adventures.”

Clarke is best known for her ongoing featured role in Game of Thrones, but the British actress has also appeared in several recent features, including the romantic drama Me Before You and the recent attempt at rebooting the Terminator franchise, Terminator Genisys. She’s been nominated for three solo Primetime Emmy Awards for her performance on Game of Thrones, and has also shared in four Screen Actors Guild Award nominations with the rest of show’s cast.

Directed by The Lego Movie and 21 Jump Street filmmakers Christopher Miller and Phil Lord from a screenplay penned by Lawrence Kasdan and Jon Kasdan, the Han Solo movie will follow the famous smuggler and the events that led up to his encounter with a young Luke Skywalker and his Jedi mentor in a Mos Eisley cantina.

The movie is currently scheduled to hit theaters May 25, 2018.