This is the Iron Soldier from Ore Army.
Note: Minify the command to avoid issues :)
Walking Dead- SWAT Corpse
Villager Infantry Soldier
Troll Blocks 1 Command Creation!
Zombie Infantry Soldier
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)