Credits: TheEnderface
Main features:
- Enderboss replaces creeper.
 - Abilities: Teleportation, punches, fireballs, summoning Enderman.
 - Transforms into Ender Crystal after defeat.
 - To kill use following: diamond armor and sword, fire resistance potion, health regeneration potion, golden apples.
 



If you'll be able to beat Enderboss, he will left an Ender Crystal after himself - you can destroy it and it will explode, however there are rumors that it also might drop some items.
How to install addons:
- Download addon into your device
 - Find and open .mcpack or .mcworld files that you download earlier
 - Click on it to import into Minecraft Pocket Edition
 - Open the game
 - Create new or edit an existing world
 - Scroll down to Add-ons section and select the ones you want to apply