CurseForge

Horrific Heights is a mod which adds some very scary things to minecraft  
  
New mobs:  
Stalker: Tall man  
Runner: Ridable beast  
Watchling: Unstoppable monster  
Watcher: Eyes  
Eye: Small eyes  
Eye Of Cthulhu: Huge boss eye (may crash your game)  
*and more to come...*  
  
New Dimension: The Middle  
Adds the demented forest  
  
New armor:  
Avidhal Op armor used to kill the stronger beasts



Horrific Heights is a mod that adds a new biome a new dimension and a bunch of whacky scary guys (That don't work.)

Horrific Heights

Sources

CurseForge