As above so below. You are the microcosmic representation of the universe (macrocosm).
The answer to your question is a paradox, both yes and no at the same time. How can this be?
The entity "Belial" is a macrocosmic representation of a certain "energy" you have inside your "psyche" right now.
It's all about energy. The universe is you on a much bigger scale. Learn to control these energies microcosmically in yourself, you learn to control them externally (macrocosmically). So in a sense they exist as both externally and internally at once...
Hopefully this makes sense....