A pigman holding nothing, still will attack if provoked.
Note: Minify the command to avoid issues :)
The Chestplate of the Warrior
The Overpowered Potion of War
Kushiro
The Chestplate of the Warrior V3
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)