They are not Occults. They are human sims with Alien DNA, whatever that means.
MedievalMods and Sims3mods: Dive Cave Reset Fix, Resort Revamp, Industrial Oven Revamp, Will O' Wisp fix, UI Sounds Disabled, No Cars, Gnome Family Planner, Townies Out on the Town, No Martial Arts Clothes, Fast Skilling, etc.
http://simsasylum.com/tfm/