Guess who? It's Nightmare BON-BON!
Note: Minify the command to avoid issues :)
Marionette/Puppet Command
The Remover
Freddy Fazbear Mob by DanTDMFan518
Papyrus Command
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)