From Bulbapedia, the community-driven Pokémon encyclopedia.
Michele Knotz is a voice actress who works on the dub of the Pokémon anime. Her name is often misspelled as Michelle Knotz.
Born October 27 in New Jersey, she was the winner of the 2003 Anime Idol voice acting contest held at the now-defunct Big Apple Anime Fest convention. The first runner up, Hilary Thomas, also provides voices for the TPCi dub.
Knotz started her Pokémon career with The Mastermind of Mirage Pokémon where she played the roles of May, Jessie, Misty and Nurse Joy. She has since voiced several human characters and Pokémon, most notably she provides the voice of Piplup and others in the Diamond & Pearl series. In Best Wishes, in addition to Jessie she now does the voices of two new regularly seen Pokémon, portraying Jessie's Woobat and Ash's Snivy.