During the production of Scooby-Doo, Where Are You!, Mystery Inc. was envisioned as five humans and a dog. But the final guy, described as a rich, snooty hipster (seemingly based on Milton from Dobie Gillis) was cut from the show. This is apparently due to Scooby gaining more prominence as the show was being made, to the point of being turned into the protagonist.
The above images come from Van Partible, the creator of Johnny Bravo. They are two of several, physical drawings that he got his hands on while working at Hanna Barbera.
This character was likely Mike Andrews mentioned in the initial pitch. (Geoff, Kelly, Linda, and W.W. are Fred, Daphne, Velma, and Shaggy respectively)













