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A Black Shell in action.
Black Shells are shells of unknown origin that appear in the Mario Kart GP series. Its effects are similar to that of a Winged Spiny Shell, though unlike a Winged Spiny Shell, it can only be fired straight and is has a higher appearance rate . It is possible that these are the shells of a Bombshell Koopa, as they are both black and they both explode. They can also be used as a triple if unlocked.
Some evidently high-ranking members of the Koopa Troop, such as Black Ninjakoopa and Lakithunder, are shown to wear non-exploding Black Shells. Additionally, in The Super Mario Bros. Super Show! Koopa Troopas, Lakitu and Hammer Brothers were portrayed as wearing, as the episode "Mario and Joliet" showed, fire-proof Black Shells.
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