Boss Mob X (X means Unkillable)
Note: Minify the command to avoid issues :)
Evil Old Man - Spooky's Hou. of Jscares
Tim's Super Boss
what the what
This Works!
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)