The Metal Booster is a hoverbike used by Metal Sonic in Sonic & SEGA All-Stars Racing. The hoverbike has a mostly blue paint job, similar to Metal Sonic's color. The vehicle is mainly composed of three sections: the back (where the seat is), the engine, and two front parts, held together by metal bars which serve as handlebars. During Metal Sonic's All-Star Move, the frontal sections of the hoverbike clamp together, releasing two plates that produce a laser field.
In Sonic & All-Stars Racing Transformed, the Metal Booster takes the form of a futuristic ATV with a noticeable resemblance to its previous appearance. During transformations, it becomes a jet ski, splitting its hull in two for racing across water. It also transforms into a futuristic hoverbike/hang-glider combo when travelling through the air.
- While the Metal Booster is classified as a hovercraft in Sonic & Sega All-Stars Racing, it is also a type of bike.