Note: Minify the command to avoid issues :)
Smelter Villager
S00P3R D00P3R Sw0RD!!1!1!1!1!1
Mushroom Drink [FOR SUPER MARIO BROS]
Ender Dragon Minion
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)