It is a Zombie riding a Wither Skeleton Skull.
Have Fun!
Achtung: Minifiziere den Command um Probleme zu vermeiden :)
Wood Soldier
Chest of Potions
Stone Soldier
Villager Calvary Soldier
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)