This is the Coal Soldier from the Ore Army.
Note: Minify the command to avoid issues :)
Slenderman Talk Commands To Creep Out Your Friends
Troll Blocks 1 Command Creation!
Fallen Astronaut
Bartender
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)