9S

9S is a YoRHa scanner android and one of the main protagonists of NieR:Automata.

9S's role in NieR:Automata

Unlike combat-focused units, he specializes in reconnaissance, hacking, and intelligence gathering while accompanying 2B on missions against machine lifeforms.

9S's defining actions and relationships

His curiosity and emotional openness drive him to uncover the truth behind YoRHa, but those discoveries also push him toward grief and obsession.