Mod Rotten Creatures will add to the game a large number of new dangerous mobs that will spawn in your world. New mobs will diversify your world and certainly make it a little more dangerous for the player.
Rotten Creatures Mod for Minecraft 1.15.2/1.14.4
New mobs are mostly zombies that have their own unique abilities. An ice zombie will have an ice weapon, and a zombie miner will shine a flashlight in the mine.
1.15.2 – Rotten-Creatures-Mod-1.15.2
1.14.4 – Rotten-Creatures-Mod-1.14.4