Glitch 001

They are many entities in Minecraft’s code that have been documented here that have been created by glitched/unfinished code. Most of those are just myths and we will never know how much of them are. This one is not one of those. How do I know this? One of my family members (I won’t say which one) used to work for Mojang. He has told me, many times of a project he worked for. Many of you might know of Entity Zero, created by a project that the Mojang Employees jokingly called Project Annihilation. In the early stages of this Project, a incomplete and glitched version of Entity Zero was tested. This was when the AI of this mob that they were trying to create was only the one of a Zombie. This eventually changed before Entity Zero was created but when this glitched version was tested, the AI somehow changed and became highly intelligent. It is unknown what happened next but this glitch somehow made it so that the developers couldn’t edit its code. It’s as if it was separated from the game code yet was still part of it. It is incredibly weird that an unfinished, uncomplete and glitched part of code was able to do this. 
Last week, I ran into something that seemed to be this. I was playing Minecraft one a brand new world. It was an amazing spawn next to a village and desert temple. I looted the village and decided to go into a small cave before going to the desert temple. I started to mine some coal when my screen suddenly froze. Weird since I have a very expensive computer but not something unbelievable. It was frozen for a couple of seconds until i was finally able to turn 180 degrees (though slowly). And the cave entrance was gone. I tried to mine a hole where i though that the cave entrance used to be. Nothing, I kept and kept on mining but the stone would never end. This is particularly unusual since i should have been not deep in the cave at all, right by the entrance. So, i started to mine a staircase going upwards but i still couldn’t get out. But, i was determined since it was one of the best seeds that i ever found. I made a long staircase but I couldn’t get out. I decided to turn around and get an iron pickaxe cause i was mining with a stone one that just broke but behind me wasn’t a staircase going all the way down to a cave. It was a wall. And now my pickaxe was broken and i had no crafting table to make another one. I quit. 
Glitch 001 seems to be able to change code and terrain at will. It also seems to be able to freeze/glitch you. It is highly possible that there were many other tests which may have led to many other ‘glitches’ before Entity Zero. But, I give this entity the name Glitch 001 because it was the first test of Project Annihilation, one of if mot the oldest creepypastas in Minecraft’s code and the first ‘glitched’ entity. At that point, I never saw it ever again.