Ending months of speculation, "Buffy the Vampire Slayer" veteran Sarah Michelle Gellar has finally revealed her role on "Star Wars Rebels": the cunning Imperial Inquisitor named Seventh Sister.

"I may be number seven," she says in a video that debuted this morning on BuzzFeed, "but I'm pretty much number one."

It was announced in March that Gellar had been casting in a recurring role on Disney XD's animated series, joining her husband Freddie Prinze Jr., who voices the Jedi Kanan. However, no details had been revealed until now.

"My character believes that Asohka is back, and she's trying to track down Asohka," the actress says, "as well as the Rebels." BuzzFeed adds that the Seventh Sister has an impressive arsenal to aid her in the pursuit, including Mimic Droids, which can imitate anyone.

"Star Wars Rebels" returns with new episodes Oct. 14 at 9:30 p.m. ET/PT on Disney XD.