The CreepyPasta Add-on brings CreepyPasta and Horror characters to Minecraft. Characters such as Jeff the killer, Jane the killer, Slenderman, Sirenhead, Squidward (Squidward's Suicide), Seed Eater, Strider, Eyeless Jack, and The Rake, and many more!
CreepyPasta Addon V4 Showcase:
Red
Giant Alex
Ben Drowned
Multihead
Lighthead
Cartoon Dog
CartoonCat
Tails Doll
Laughing Jack
Credit to Baushawat
Sirenhead
Zalgo
Sonic.exe
Moder
Jeff the killer
Slenderman
Jane the killer
Squidward (Squidward's suicide)
Eyeless Jack
Strider
The Rake
Seed Eater
Smile Dog
Mothman
Photonegative Mickey
John
(Credit to JohnTristan)
Clock
Laptop
You can buy things from the laptop with in-game "Doge Coins"