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,
Scooby-Doo four like a normal dog as he did previously. Fred, Daphne, and Velma were dropped from the series, and the new "Scooby-Doo and Scrappy-Doo" format now consisted of three seven-minute comedic adventures starring Scooby, Scrappy, and Shaggy instead of one half-hour mystery. Most of the supernatural villains in the seven-minute "Scooby and Scrappy" cartoons, who in previous "Scooby" series had been revealed to be human criminals in costume, were now real within the context of the series. This version of "Scooby-Doo and Scrappy-Doo" first aired from 1980 to 1982 as part of "The Richie Rich/Scooby-Doo Show", an hour-long program also