YoRHa No.9 Type S, commonly known as 9S, is a protagonist in the anime series adaptation of NieR:Automata. He is an advanced android created by the YoRHa organization, specializing in intelligence and hacking operations. Throughout the series, 9S partners with combat android 2B, and they are tasked with battling alien machine invaders to save humanity. His inquisitive nature often leads him to question the world around him, driving the narrative towards uncovering hidden truths. As a Scanner model, 9S's role is crucial in deciphering enemy strategies and exposing the mysteries surrounding the YoRHa project.