While in The Shaggy D.A. (1976) he was John Slade, who shares many similarities with the first appearance of Hawk in The Absent-Minded Professor.
Return of the Shaggy Dog is a 1987 two-part television movie interquel to the 1959 feature film The Shaggy Dog, but the character timelines are before that of the 1976 film The Shaggy D.A., all produced by The Walt Disney Company.
Shaggy | Shaggy (musician) | Shaggy (artist) | Angel (Shaggy) | The Shaggy D.A. | Shaggy Rogers | Shaggy Flores | Shaggy Ridge | Fox's shaggy rat |