This is the new and improved enderdragon!(Use a command block(DUHHHH))
Note: Minify the command to avoid issues :)
Tank Slime Soldier
The New Enderdragon!
A test
How To Rig Minecraft
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)