Scooby-Doo and the Alien Invaders four Scooby-Doo direct-to-video films to be animated overseas by Japanese animation studio Mook Animation. It was the last film to feature Mary Kay Bergman as the voice of Daphne before her death in November 1999 and the film was dedicated to her memory. The Mystery Machine is driving through a desert in Roswell, New Mexico. A sandstorm comes up and Shaggy Rogers makes a wrong turn onto government property. Seeing a UFO causes Shaggy to lose control of the vehicle and the gang find themselves on the outskirts of a small town. While Scooby-Doo and Shaggy stay with the van,
The 13 Ghosts of Scooby-Doo Boomerang until 2014. The entire series is also available on the Boomerang streaming service. In 2019, a follow up movie, "Scooby-Doo! and the Curse of the 13th Ghost", will conclude the plot. With 13 episodes, it is the shortest-running series in the "Scooby-Doo" franchise. In the initial episode, the gang are thrown off course on a trip to Honolulu in Daphne's plane, landing instead in the Himalayas. While inside a temple, Scooby and Shaggy are tricked by two bumbling ghosts named Weerd and Bogel into opening the Chest of Demons, a magical artifact which houses the 13 most terrifying and