So what from I am hearing, there is a new Creepypasta mod for Minecraft, and includes the following-

1. JTK Mobs

2. Jane the Killer Mobs

3. The Rake Mobs

4. Smile Dog Mobs

In order to spawn any of them, you have to make a computer and some paper and print out a random Creepypasta. (From the 4 above.)