Scooby-Doo! and the Samurai Sword - Original Movie

While in Tokyo for a martial arts tournament, Scooby (Frank Welker), Shaggy (Casey Kasem) and the rest of the Mystery Inc. gang (Mindy Cohn, Grey DeLisle), are confronted by the Black Samurai (Kevin Michael Richardson), an evil spirit who was vanquished in ancient Japan but has been mysteriously resurrected. In order to defeat the samurai, the gang will have to beat him in a treasure hunt across Asia, solving riddles and fighting a host of ninjas along the way.