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
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Super Smash Bros. Crusade/Tails - Mizuumi Wiki, super tails wiki
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Gallery:Koopa Troopa - Super Mario Wiki, the Mario encyclopedia
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Koopa General - Super Mario Wiki, the Mario encyclopedia