As you may recall from Captain America: The Winter Soldier, Emily VanCamp played a small but important role as Agent 13, also known as Sharon Carter, niece of our beloved Agent Carter. The Revenge star has signed on to reprise her role in Captain America: Civil War, answering the call of duty (and presumably the call to aid Cap) once again.

Deadline reports that VanCamp has joined the ever-growing roster of MCU stars, along with Martin Freeman, who was recently announced to have joined the cast in a secret role. In The Winter Soldier, VanCamp played Agent 13, who was assigned the identity of Kate, a girl who lives down the hall from Steve Rogers and has secretly been given a mission to keep an eye on him.

Although she was never revealed as Peggy Carter’s niece Sharon in the film, comic book fans are quite familiar with Agent 13 and her real identity, which made for a nice little easter egg of sorts.

VanCamp joins Chris Evans as Steve Rogers/Captain America, Robert Downey Jr. as Tony Stark/Iron Man, Sebastian Stan as Bucky Barnes, Elizabeth Olsen as Scarlet Witch, Scarlett Johansson as Black Widow, Jeremy Renner’s Hawkeye and Anthony Mackie’s Falcon. Daniel Bruhl recently confirmed that he’s playing the villainous Baron Zemo, although it’s been reported that the central villain of the film is Frank Grillo’s Crossbones.

Captain America: Civil War hits theaters on May 6, 2016.

Check out the 50 coolest easter eggs from the Marvel Cinematic Universe: