The Nether Variants addon
The Nether Variants adds over 14 new mobs into your game. Each of them will have something unique. For example Wither Archers will have ability to shoot 2-3 arrows at one time, another mob Soul Withers is very speedy, you can’t go away from him. Another mob Wither Brutes is very slow, but hit very powerful. All mobs will be spawned naturally around your world.
How to get new mobs?
you can create new world, set up survival mode and find spawn eggs in your inventory. If you play in survival mode, then you will see that mobs will spawn automatically.
screenshots with new mobs are here
Download The Nether Variants addon for Minecraft PE 1.16
last Minecraft PE FULL version 1.16.10
last Minecraft PE BETA version 1.16.20.54