This is the Bedrock Barbarian from the Ore Army.
Note: Minify the command to avoid issues :)
Control Panel For Your World or Server
Bedrock Barbarian
Wizard: Used in Wizard Battle
Splash Potion of Mining Fatigue
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)