Nitro Update. Nitro Fists and Goo Gun added to players weapon slots. On Roshi’s Island, Goku and Vegeta stand facing each other, their eyes locked in a fierce stare-down. In their hands, they each hold a Kinetic Boomerang, a weapon that harnesses the user’s energy and transforms it into a powerful, controllable projectile. In the midst of this intense battle, they reach into their pockets and pull out Zero Point Pretzels. These aren’t ordinary pretzels, but grant them the ability to teleport.