2B; is a machine lifeform who is part of the combat unit YoRHa. Her main mission is to hunt down and destroy rogue machine lifeforms. Although she has the same appearance as other 2B units, each have their own unique personalities. She's emotionless, strong confident, intelligent, analytical, blunt, and doesn't comprehend humans that well. She was created to be like humans but still has undeveloped humanity. She falls into the category of possessive if she falls in love. But she's naive in love.