Scooby-Dum is Scooby-Doo's cousin. Dum lives with Ma and Pa Skillett in the Hokeyfenokee Swamp of southern Georgia. Whenever Doo and Dum greet each other, Scooby-Doo greets, "Scooby-Dum" and Scooby-Dum says, "Scooby, doobie, doo." They then do a special handshake involving two high fives.