Gong

A gong is an East and Southeast Asian musical percussion instrument that takes the form of a flat, circular metal disc which is hit with a mallet.

Season one
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Season two
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Scooby-Doo and the Ghoul School
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Appearances

 * Scooby-Doo, Where Are You!
 * 117.
 * 202.
 * Miguel (Scooby-Doo and the Ghoul School