Scooby-Doo, Where Are You! is an American animated television series that first premiered in 1969. The show follows a group of teenagers and their talking Great Dane, Scooby-Doo, as they solve mysteries involving supposedly supernatural creatures. The series is considered a classic in the world of animation and has spawned numerous spin-offs and adaptations.The main cast of the original series includes:Scooby-Doo: The titular character, Scooby-Doo is a Great Dane who is known for his love of food and his catchphrase, 'Scooby-Dooby-Doo!' He is voiced by Don Messick in the original series and later by Frank Welker.Shaggy Rogers: Scooby-Doo's best friend and owner, Shaggy is known for his love of food and his cowardice. He is voiced by Casey Kasem in the original series and later by Matthew Lillard.Fred Jones: The leader of the group, Fred is known for his intelligence and bravery. He is voiced by Frank Welker.Daphne Blake: The fashion-conscious member of the group, Daphne is known for her intelligence and her love of adventure. She is voiced by Stefanianna Christopherson in the original series and later by Grey Griffin.Velma Dinkley: The brains of the group, Velma is known for her intelligence and her love of solving mysteries. She is voiced by Nicole Jaffe in the original series and later by Mindy Cohn.The show was a huge success and was on air for several years, and it has continued to be popular decades later. The series has been rerun on several television networks and has been released on DVD. The characters have also been adapted into various other forms of media, including comic books, feature films, and video games.In addition to the original series, several spin-offs and adaptations have been produced, including Scooby-Doo, Where Are You! Mystery Incorporated, Be Cool, Scooby-Doo! and Scooby-Doo and Guess Who?. These spin-offs feature the same characters, but with updated animation, new voice actors and new stories.In conclusion, Scooby-Doo, Where Are You! is an American animated television series that first premiered in 1969. The main cast of the original series includes Scooby-Doo, Shaggy Rogers, Fred Jones, Daphne Blake, and Velma Dinkley. The show was a huge success and was on air for several years, and it has continued to be popular decades later. The series has been rerun on several television networks and has been released on DVD and also has various spin-offs and adaptations. The characters have also been adapted into various other forms of media, including comic books, feature films, and video games.