Mad Max: Fury Road actress Charlize Theron and Kristofer Hivju of Game of Thrones fame have joined the cast of Fast 8.

Rumors surfaced earlier this year, saying Theron was being sought to star as the film's villain, and sources have since confirmed to Variety she will indeed play "some sort of villain," though details are currently "vague."

Meanwhile, TheWrap reports that Hivju has been cast as the henchman of Fast 8's crew of baddies. Aside from that tidbit of information, however, specifics on his role are also scarce.

The Fast and The Furious 8 opens in theaters on April 14, 2017 and will serve as the start of a new trilogy. Straight Outta Compton helmer F. Gary Gray will direct, with production to begin soon in Iceland.