Miyumi is a minor character in the Scooby-Doo movie "Scooby-Doo! and the Samurai Sword".
She is a friend of Daphne Blake and fellow martial artists. Her being close to Daphne is initially an act ordered by her master, Miss Mirimoto, but the two girls became close friends despite it. At the end of the movie she is offered to become part of the Mystery Inc. but she turned down the offer to find her own path.