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,
Shaggy & Scooby-Doo Get a Clue! on-the-run Uncle Albert. Another noticeable difference is that Shaggy now wears a white short-sleeved shirt with a green strip across the middle and green sleeves instead of his trademark green T-shirt. Frank Welker still does Scooby's voice. In addition, Shaggy and Scooby's cowardice tendencies have been considerably toned down. Much like "The 13 Ghosts of Scooby-Doo" on ABC in 1985 (which had actual ghosts and monsters) and the "Scooby-Doo and Scrappy-Doo" shorts in 1980, this show is different from the usual "crooks masquerading as ghosts and monsters" series. Fred Jones, Daphne Blake and Velma Dinkley are downgraded, but not completely