Spiny Shell

Spiny Shell can refer to the following:
 * The red Spiny Shell that appears in main-series titles and spin-off titles.
 * The blue Spiny Shell that appears exclusively in spin-off titles, most commonly in the Mario Kart series.
 * Spiky Shell, an item that appears in Puzzle & Dragons: Super Mario Bros. Edition.
 * Grand Spiky Shell, an item that appears in Puzzle & Dragons: Super Mario Bros. Edition.
 * Spinies, Koopa enemies with spiked shells that are called "Spiny Shells" in promotional material for The Super Mario Bros. Movie.