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The Rare Truffle is a type of Emblem Heartless that appears in Kingdom Hearts. Unlike most Heartless, this creature isn't hostile, though the reasons as to why not are a total mystery. It shares the same appearance as the other members of the Mushroom Heartless family: a black head with no features apart from two small yellow eyes, a mushroom-like cap and a robe adorned with the Heartless emblem. Its robe is coloured deep blue.
When encountered by Sora, Donald and Goofy, the Rare Truffle does not attack simply wanders around slowly, occasionally jumping. Like the White Mushroom, it rewards Sora for performing specific actions. In the Rare Truffle's case, Sora must attack it and juggle it in the air without letting it touch the ground. If Sora juggles a Rare Truffle fifty times or more, he will be rewarded an item that serves as proof of his accomplishment. This reward can be sold for a small amount of munny but serves no other purpose.