It is a Zombie riding a Wither Skeleton Skull.
Have Fun!
Note: Minify the command to avoid issues :)
Bedrock Barbarian
Bartender
Walking Dead- Walker Zombie
Factions Villager For Your Factions Server
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)
genessee
genessee
darkknight3227
galbby5
deadpoolbadhair