Koopa (species) - Super Mario Wiki, the Mario encyclopedia

Koopas are a category of turtle-like creatures that form the Turtle Tribe. There are many different types of Koopas, the most common being Koopa Troopas; they are specifically named for the species that Bowser belongs to due to an inconsistency in

Koopa (species) - Super Mario Wiki, the Mario encyclopedia

Ludwig von Koopa - Super Mario Wiki, the Mario encyclopedia

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Morton Koopa Jr., MarioWiki

Koopa Paratroopa - Super Mario Wiki, the Mario encyclopedia

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Chargin' Chuck - Super Mario Wiki, the Mario encyclopedia

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