Shell

Shell may refer to:
 * Green Shell, the most common type of shell, worn by Koopa Troopas.
 * Red Shell, a special type of Koopa Troopa shell.
 * Blue Shell, a rare shell that can make wings pop up on Yoshis. This shell can also act as a power-up, turning Mario into Shell Mario.
 * Spiny Shell, a blue-colored spiked Koopa Troopa Shell that has the power to home in the 1st place driver in the Mario Kart series.
 * Yellow Shell, an extremely rare Koopa Troopa shell that can make Yoshis heavy.
 * Kamikaze Koopa, a Koopa Troopa in a shell that flashes a rainbow of colors.
 * Black Shell, an explosive shell found only in Mario Kart Arcade GP.
 * Gold Shell, a type of Koopa Troopa Shell, found in Super Mario Galaxy, Super Mario Galaxy 2, and New Super Mario Bros. 2.
 * Spiny Shell, a type of shell worn by Spinies.
 * Bowser's Shell, a large shell that can only be obtained by Bowser and Bowser Jr.
 * Triple Shells, a set of three shells commonly found in the Mario Kart series and Mario sports titles.
 * Shell Helmet, a Spiny or Buzzy Beetle shell worn over the head as protection in Super Mario Maker.
 * Shell, an item in Donkey Kong Country 3: Dixie Kong's Double Trouble!.
 * The Shell's Secret, the third episode of Noki Bay in Super Mario Sunshine.
 * A prototype name for the Wii Classic Controller.