It is possible to kill it. Potions are recommended.
Note: Minify the command to avoid issues :)
Mr. Señor Dorito
Can't Jump Potion
Pat's Head-Jen's Wacky Guesses Mod
Crystal Urchin
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)
sciride
sciride
darkknight3227
galbby5
deadpoolbadhair