Destroyer is a robot made by herobrine himself, he made it after notch exiled him from the land of mincraftia, being made out of pure hate destroyer was the ultimate weapon to obtain the overworld, so with his new weapon he lead his army into the gate, and flooded the overworld, there was destruction all over, people dying bombs being thrown, lasers flying by your head, but notch was no where to be found, the mincraftian people thought they were doomed, but it turned out notch new about this fight and was building another warrior, the warrior of the sky, notch descended from the heavens above with his new robot and engaged herobrine head to head, and the sky warrior and the destroy, battled, notch new he couldn't win so with the ultimate sacrifice he sealed the 4 of them into a ball of energey and destroyed them to save mincraftia.
That's it guys sorry for the Lack of uploaded and see you later dudes!