American Dad Wikia

Scooby-Doo! is an animated series produced for Saturday morning television in several different versions from 1969 to the present. The original series, Scooby-Doo, Where Are You!, was created for Hanna-Barbera Productions and has produced numerous spin-offs and related works until being absorbed in 2001 into Warner Bros. Animation. Most series includes four teenagers or young adults as well at the titular great dane: Fred "Freddie" Jones, Daphne Blake, Velma Dinkley, and Norville "Shaggy" Rogers. These five characters are officially collectively known as "Mystery, Inc."

One of the "CHIA Pets" grown on the space station in "Great Space Roaster" is a bust of Shaggy's head.

Velma and Shaggy appear in "100 A.D." in an artist rendering used to describe Jeff and Hayley.

When the women learn that Holly Graham is really a hologram controlled by a pervert in a closet in "Hot Scoomp", he compares them to Scooby-Doo for finding him out.

The family dresses as the Scooby gang for Halloween in "Z.O.I.N.C.S.".

Dick stutters the word "ghosts" in the same manner as Shaggy in "A New Era For The Smith House".