Barney comes with a blue axe, a green sword, and golden dynamite sticks to scare children. Also included, is a blue spinner.
In an alternate Ninjago world, Kai, Cole, Zane, and Jay never existed. Sensei Wu did the only thing he could to save their world. He picked multiple apprentices. Barney was chosen to be the ninja of darkness (he didn't need any training), the link to the underworld.