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.

Buffy the Vampire Slayer is back, and this time, she’s passing the stake. Star Wars: Skeleton Crew actress Ryan Kiera Armstrong will be the new face of the slayer in Hulu’s upcoming Buffy reboot. Sarah Michelle Gellar,

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.