# Shell
The Blue Spiny Koopa Shell also known as Koopa Shell, or simply Blue Shell is a usable item from the Mario Kart series that made its first appearance in Mario Kart 64. A fanart Mario Kart game progress bar for YouTube with The Blue Spiny Koopa Shell.
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PreviewGreen Koopa Shells are the shell of green Koopa Troopa that appear in many games of the Mario series and Mario Kart series. A fanart Super Mario progress bar for YouTube with Green Koopa Shell.
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PreviewRed Koopa Shells are shells from red Koopa Troops that frequently appear in various Mario games and have the most impact in the Mario Kart game series. A fanart Mario progress bar for YouTube with Red Koopa Shell.
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