Zipper is one of Waluigi's three Karts in Mario Kart DS. The other two are the Standard WL and Gold Mantis. It resembles a three-wheeled chopper like motorcycle. It has average stats, all of which, except for weight and items, are slightly lower than his other karts. It is the successor to the Waluigi Racer from Mario Kart: Double Dash!!.
It is unlocked when either the player completes all cups in the 100cc Retro Grand Prix along with Waluigi, or when the player completes all cups in the 150cc Nitro or Retro Grand Prix. Toad and Wario can use the Zipper when all 150cc Nitro or Retro Grand Prix cups are completed, just like how they can use Mario's Shooting Star. All characters can use this kart when all cups in Mirror Mode have been completed.