This command you can spawn The Queen with no mods.
Note: Minify the command to avoid issues :)
The White Pumpkin - A Portal to Mystery
Mob Spawner Tower
The King Boss Battle
Nether Dragon in Minecraft?
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)