Occults are various life states that Sims can take on in . They both give unique appearances and come with gameplay powers. Unlike other games in the series, Sims can have multiple occult features to create a hybrid.
However, to visibly see this, a Sim needs to gain these features in specific orders. Additionally, a hybrid can be visually glitched if they attempt to simultaneously act like a Vampire and Werewolf at the exact same time.
It isn’t a simple feat to gain one occult power, let alone all of them. For a few, your Sim specifically needs to be born that way.
But for most others, you also need to have random chance encounters and create a great relationship with NPCs.
Becoming an occult is partially luck and actively doing specific interactions. If this is too burdensome, it is also possible to use cheats to spawn events. Gaining an occult form typically requires finding and getting to know specific NPCs.