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.