The Ninth Sister is an Imperial Inquisitor from Star Wars Jedi: Fallen Order, the 2019 action game from Respawn Entertainment, where she hunts Jedi survivors with a double-bladed lightsaber. Her weapon's power-down sound comes from that game, and clips of it later spread through soundboards and fan edits as a short, recognisable Star Wars effect. Creators still use it because it instantly signals a lightsaber, a villain, and a fight ending without needing dialogue or a visual cue.