Nobody

A nobody is the body and soul of a strong-willed individual who has lost their heart. The concept originates from the Kingdom Hearts franchise. Basically Nomura played Persona and really liked the shadow self concept but didn't want to rip it off so he made this instead. Nobodies are not automatically aligned to good or evil. They typically remain neutral or take some form of Anti-Hero.

Contrast From Shadow Self
Unlike a shadow self, a Nobody is a self contained entity. They do not share the conscience of the user. Nobodies typically take on their own personality, with the most common being the antithesis of their user's traits. Because they replicate the body of the user, they do not inherit supernatural abilities.

Notable Nobodies

 * 131ε- Naomi Kirijo (Nobody of Mitsuru Kirijo)