I think that a demon in this case or a second or third or fifth personality is a set of terms to value oneself in.
Its just a standard of self-valuing that can cohabitate in the same body as 4 others. Pretty simple nothing to worry about any more than “normal” humans - who might in many cases even be more happy if they had several personalities too.
I find it healthy to wear masks from time to time, it offers pathways into experience, which is the real identity.
If you don’t find me convincing, listen to my alter-ego:
" As humans, most of our time we spend in avoiding experiences. In our seeking-out of what we aim to experience, we are shifting and sneaking along the invisible walls facing us from every direction but the one we seek to disclose - the walled off area of “the real” is however constantly accessible, these walls can be broken down with the force of intent. The lack of this intent is precisely what makes us effective as prolonged identities, which leads finally in complex beings to what we can begin to call experience.
The identity of experience is experience accepted into the being as its being. The same mechanisms that cause experience, also perform a lot of activity going on that is not ‘owned’ by the organism. Freud goes into this as a repressed - suggesting that the identity of this experience is already ‘the name of the subject’, but actively kept away from its consciousness. I would propose that we address this differently - as ‘untranslated affect’, affect not yet interpreted in terms of the particular self-valuing.
Psychoanalysis is not the art of retrieving experiences to consciousness, but to identify physical affect as experience. This is always done after the fact, also when there is no ‘repression’, or what I would call simply an insufficient power to identify in terms of self - the delicate dove-like beauty of the self to itself facing very dangerous and compromising affect, “raw” affect, which can not be specified, categorized in ‘true terms’ as Spinoza has it - pleasure or joy (laetitia), pain or sorrow (tristitia)and desire (cupiditas) or appetite. "
Since the belief in Ego is as hollow as belief in One God, it is only natural that people fall away from the illusion into a poly-egotism, to later on realize the plurality of being-as-such, and create new Pantheons of Pleasure.