YoRHa No.2 Type B (Battle) or 2B serves as the protagonist of Route A in NieR:Automata. She is a YoRHa android created to battle the machine lifeforms that have invaded the planet on behalf of the surviving humans. She served during the 14th Machine War.

2B is an all-purpose battle android, deployed as a member of the automated YoRHa infantry. She is equipped with a multitude of weapons for close quarters combat and can attack from range using the Pod support system. Her eyes are obscured beneath her standard-issue military visor, which she rarely removes.

YoRHa No.9 Type S (Scanner) or 9S is the protagonist of Branches B and D in NieR:Automata, as well as one of the main antagonists and final boss of Branch C.

9S is a scanner type android who served during the 14th Machine War. He has an attack function, but it is an android that specializes in investigative purposes—a member of the automated infantry squad, YoRHa, who triumphs in hacking-based information collection.