Megan Hollingshead, also known as Karen Thompson or Kelli Kassidi,[3] is an American voice actress, best known for her roles as Nurse Joy in Pokémon, Mai Valentine in Yu-Gi-Oh!, Shizune in Naruto, Caster in Fate/stay night, Rangiku Matsumoto in Bleach, and Re-l Mayer in Ergo Proxy.