The New Scooby and Scrappy-Doo Show The New Scooby-Doo Mysteries Episode 16 A Halloween Hassle at Dracula's Castle (2) ( Air Date 1984-10-27 ) Genre Animation, Mystery, Family, Comedy, Kids category. Overview "On Halloween night, after being lured to the castle of Count Dracula, the gang must help a gaggle of real monsters take on an evil magician and a ghost before it’s too late. Guest stars Frank Welker as Fred and Marla Frumkin as Velma.".