Fun fact: the 3 imps/ succubi that posses Connie are lesser demons that belong to a prince (Patreon)

Liselle is a imp belonging to Raylon of wrath

Enassa is a greed imp belonging to Zavis

And tauni is a gluttony imp belonging to Galiel

Imps/ lesser demons are made when a human sells their souls to a demon prince, and then that soul is taken, corrupted, and turned into a new creation entirely. A new spirit with none of their human memories, a new name, the appreance of the human they were soul born from, and the traits of the demon that formed them. They are then under that demons command. That is why souls are valuable to the princes in my world.