2B is one of the protagonists of 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. After being resuscitated when the War ended, she is now enjoying the beauty of an Earth whose inhabitants have long left, and is more sociable, open and even a bit flirtatious. She is still deeply devoted to humanity, and fascinated by it.