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Leon is a non-playable character in Mario Tennis: Power Tour. He is one of several human characters created exclusively for the Mario Tennis series. He is from the Union school. His doubles partner is Peter, and he can only be found during the Island Open Doubles Tournament. If talked to, he proclaims that he can stupefy his opponents by using "The Shot". He and Peter lose to Elroy and Tori in the first round, never getting a single point against them. He later says that, because they kept relying on Power Shots, they lost. Because he is never faced by the player, he can never be unlocked as a playable character.