Playing with the Grim Reaper hidden trait

"GrumpyGlowfish;c-18191965" wrote:
https://abload.de/img/untotemeditationeyf2q.png

I've had the Grim Reaper as a regular sim in my main save for a long time and nothing bad ever happened. For the most part, he behaves like a regular sim despite obviously looking different, having a deep voice, and some of his needs being frozen. He still kept his job as the NPC that showed up when someone died in another household, except when there was a death in his own household, which caused a different Grim Reaper to appear.

https://abload.de/img/zweisensenmannerf5cgz.png

That new Grim Reaper has been the "official" one ever since, but the old one kept all the other properties that made him special. I haven't played with this family for over a year, so I don't know if the same rules still apply with all the catastrophic patches that have been released since. But you can always make a copy of your save and try it there first if you're unsure.