Notch Boss Battle (Almost impossible to kill ALMOST)
Note: Minify the command to avoid issues :)
Zombie Horseman (1.9.1)
Herobrine Spawner! (1.8,Spawns only at the night) A VERY POWERFUL HEROBRINE
Command Science Boss battle
Skeleton Archer (1.9.1)
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)