You can have your very own Pikachu in vanilla minecraft with one command!
Note: Minify the command to avoid issues :)
Knockback Stick
Pikachu with Only One Command!
The Minephone [Minecraft Smartphone]
Pet ENDER DRAGON!!!!!
Wither Storm Boss in ONE COMMAND
HEROBRINE COMMAND
HEROBRINE BOSS BATTLE (See YouTube for details)