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Dr. Yung is the creator of the mirage system in the 10th anniversary special: The Mastermind of Mirage Pokémon. He battled Misty using his mirage Aggron, however when he battled Ash the mirage system apparently malfunctioned and was seemingly captured by Mirage Master. Professor Oak later reveals that Dr. Yung is Mirage Master. He, however, disappears at the end of the special, without a trace. He is voiced by Billy Regan.

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