The Divergent sequel Insurgent has added two more cast members.

Update (5/30): The film’s official social media channels have made a post announcing that Weston will play a new character named Edgar:

Suki Waterhouse will play Marlene, a Dauntless member who actually appears in Veronica Roth’s Divergent book but wasn’t cast for the film. In book one she’s seen during the capture the flag game and flirts with Four, who isn’t interested in her.

In Insurgent, Marlene develops a relationship with Uriah and is killed by Jeanine during a simulation.

Waterhouse is new to the Hollywood scene, having only appeared in a short film and two feature length movies including 2012′s Pusher.

Jonny Weston’s involvement with the movie was also announced today, but his role was not named by any Hollywood trade. Since both actors surfaced in one report, it’s possible that Weston will be playing Uriah. If so, this means the studio is switching the race of the character. Again, this is complete speculation on our part as we await a formal announcement.

Weston has had roles in Chasing Mavericks and John Dies at the End. He’s also set to appear in 2015′s Taken 3.

Summit announced the start of principal photography on Insurgent earlier this week as the highly-anticipated YA sequel begins to shoot in Atlanta, Georgia.

The movie is directed by Robert Schwentke and stars Shailene Woodley, Kate Winslet, and Theo James. It opens in theaters March 2015.

Cast additions have been slowly surfacing in recent weeks. Earlier this month the studio added Octavia Spencer and Hunger Games alum Stephanie L. Schlund.

Who do you think Weston will be playing?

Thanks, Hollywood Reporter!