Skippy-Doo is one of Scooby-Doo's younger brothers.
Skippy is a brown Great Dane puppy who looks exactly like his older brother. He wears a red collar and square framed glasses like his father.
Skippy is clearly intelligent as he enjoy handling complex computers; which he could relate to Velma Dinkley with.
A Pup Named Scooby-Doo
(to Velma) "My new computer should prove to be highly efficient."
(Velma) "Jinkies, Skippy! That's what I was going to say."