Scooby-Doo, Where Are You! In 1969, the world was introduced to the Scooby gang, a rag-tag team of teenagers and their cowardly Great Dane companion as they investigate paranormal activity. Of course, it would usually just end up being some guy wearing a fiendish mask. Believe it or not, the original show only lasted two seasons, but it has since been revived into various spin-offs and remakes.