It is a Zombie riding a Wither Skeleton Skull.
Have Fun!
Note: Minify the command to avoid issues :)
Spell Tome of Heath II
Walking Dead- FBI Zombie
Villager Infantry Soldier
Lapis Archer
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)
genessee
genessee
darkknight3227
galbby5
deadpoolbadhair