The New Scooby-Doo Mysteries Picking up where 'The New Scooby and Scappy Doo Show' left off. The main difference being that the team is now occasionally joined by Daphne Blake and friends to solve mysteries together. Details Casts Videos Galleries Posters Season Lists Title The New Scooby-Doo Mysteries Genres Animation Family Comedy Kids Mystery First Air Date 1984-09-08 Last Air Date 1984-12-01 Episode Runtime 00 Hours 30 Minutes Total Season(s) 1 Total Episode(s) on All Seasons 26 Runtime 30 Production Companies Hanna-Barbera Productions Casey Kasem... Shaggy Rogers (voice)... Heather North... Daphne Blake (voice)... Don Messick... Scooby-Doo / Scrappy-Doo ... Frank Welker... Fred Jones (voice)... Marla Frumkin... Velma Dinkley (voice)... The New Scooby Doo Mysteries Opening closing theme (Opening Credits) Original Size (1920x1080) Original Size (662x1000) Original Size (960x1440) Season 1 26 Episode(s) 1984-09-08