Mei is a smart, off-setting, and assertive girl, often making those around her uncomfortable. She loves creating gadgets, which she refers to as her "super cute babies". Mei has a habit of "going straight to the point", and is very shameless and opportunistic when it comes to advertising her inventions. While talking to people, she has a habit of getting awkwardly close to them, which usually causes them to back away from her but she still moves up to them.