2B is a fictional character from the video game series NieR, specifically featured in NieR: Automata. She is an android created to combat alien machines and is known for her combat skills and distinctive appearance, which includes a black dress and blindfold. 2B is a member of the YoRHa organization, tasked with reclaiming Earth from machine lifeforms. In the game, 2B is accompanied by her partner, 9S, who provides support and analysis during their missions. The story explores themes of existentialism, identity, and the nature of consciousness, making 2B a central figure in the narrative's philosophical discussions.