Being plural means you don't just have the One gender. Or Name. Or Pronouns.
And parts of you can come back from the Dead and wake up fifteen years down the line and need therapy.
The positive side is that after wrangling this kinda disorder, Demonic Possession seems almost underwhelming.
Il-Chamadoth the Defiler could show up tomorrow in here and all that'd happen is he'd get tranq'd, Tagged, and set up with a therapy schedule.