Well, with a name like “Little Demon”, this ones on you. You should have seen that name at the shelter and said “Ya know what? I don’t have the time for Little Demon. I’ll adopt Snowball instead.”
Don’t get me wrong, Snowball is a bigger psychopath than Little Demon, but you wouldn’t know that. Her full name is “Snowball’s chance in hell that your testicles survive”.
It’s weird how we name cats after their violent tendancies in this universe.