Don't encourage him. (did you know that the koanashi icon represents a repressed libido?- says a lot )

Excerpt from quora posts on the subject...

No-Face is trying to be someone, he's trying to have an identity, and he's using the personality traits and behaviors of the people around him in order to give shape to his identity.

...the character is a vampire (it steals personalities in an attempt to get on of his own), and goes ballistic when not taken seriously by those he wants.

he's obviously pretty dim, to - he thinks control over others is a good idea...