Armstrong will star alongside Sarah Michelle Gellar. The "Buffy" universe has added its newest slayer. On Thursday, Ryan Kiera Armstrong's addition to the cast of the upcoming "Buffy the Vampire Slayer" reboot was announced.

Ryan Kiera Armstrong has staked the role of the new slayer in town in the upcoming "Buffy the Vampire Slayer" revival. The 15-year-old actor will co-star with original series lead Sarah Michelle Gellar. The two actors shared the news May 15 in a joint Instagram post featuring a video that showed Gellar breaking the casting news to Armstrong.

Previous reports suggested the Slayer's name would be Nova and she would have a pair of friends - Hugo and Gracie. Hugo was described as an "out and proud" nerd from a wealthy family, while Gracie was described as an acolyte of Gellar's Buffy. However, Gellar later debunked these reports, calling them "fake."