There’s no rest for the weary, and no rest for director Ridley Scott coming off his highest-grossing movie ever, the multi-Oscar nominated The Martian. Scott is already hard at work on Alien: Covenant, and the first casting call was just posted by Australian talent agency MCTV Management Group. The short casting blurb for the movie, which begins shooting in April, gives us some hints on what otherworldly drama could be afoot in the Prometheus sequel.

Here’s the casting call in full:

Age Range: 8-40

Physical Attributes: Skinny and very tall or skinny and very short but strong and very physically agile.

Other Skills: Fast in Movement. Acrobats, Dancers, Gymnasts, Contortionists, Cirque du Soleil type performers.

MCTV also adds, “This is the first of what we hope will be many castings for this movie.”

The name of the role is kept under wraps, but it definitely sounds like the production is looking for a wide range of Engineers, the pale white dudes from Prometheus, or xenomorphs, the acid-blooded aliens from Scott’s movie and its sequels. They also seem to be looking for young aliens too.

The request for “skinny and very tall” people and “Gymnasts, Contortionists, Cirque du Soleil type performers” mirrors the same lanky build of Bolaji Badejo, the Nigerian amateur actor that played the eponymous alien in the 1979 original.

Alien: Covenent, which is set 10 years after Prometheus, will reportedly star Noomi Rapace, Michael Fassbender, and newcomer Katherine Waterston. Rumors are that Fassbender’s character, the android David, may be the film’s primary villain. The movie is slated for release in October 2017.