The original Mystery Incorporated were a mystery solving club from Crystal Cove. They went missing after several trips in the Crystal Cove Caves.
They explored the ruins of the old Darrow Mansion which had disappeared underground, unaware they were being watched by old Danny Darrow.
They discovered a picture of the Planispheric Disk in an old ruined church. Soon after, they were threatened and forced to leave Crystal Cove.
Scooby-Doo! Mystery IncorporatedEdit
In The Legend Of Alice May, pictures of them were found in a Crystal Cove High School yearbook.
In Hoadog of Horror, Pericles summoned them together when the younger Mystery Inc. had the third and fourth pieces of the Planispheric Disk.