One day, somewhere in the depths of the Nether, because of a failed experiment to conquer the overworld of a piglin scientist in the Nether a virus appeared that could freeze all the nether. This virus has managed to freeze much of the nether along with its creatures. The king of the nether was desperate to get the nether back to normal. The king asked for the help of Death in order to stop the virus. Death accepted, but in exchange for something he wanted.The king accepted the condition of Death. Death has successfully completed its mission.Then the condition of Death was to be fulfilled, this being to take the souls of half of the Nether's population of piglins and turn them into zombies .That's how zombie piglins appeared.