Brad Chiles is the biological father of Fred Jones, Jr., and the leader of the original Mystery Incorporated, who vanished twenty years ago in the Crystal Cove Caves.
He is married to Fred's birth mother, Judy Reeves, who is another member of the group. He is also Fred's original Mystery Inc. counterpart - being the leader of the his own group.
He and Judy make traps and solve mysteries under the assumed name of "Sternum and Sternum". They also have their own TV show about themselves under that name. They invented the Flattenhower 8000.