Scary Minecraft Mods?

I would like to create a minecraft project with my friend and need mods with spooky features. For example Mods with funny mobs, items (eg Kennensäge).

So just everything that makes the world scary!

Ever heard of the Herobrine Mod?

That is really good.

Yes, but I want to do some sort of roleplay. That My friend wakes up at night and I play a scary character…