Scooby-Doo boxes, iron-on transfers, coloring books, story books, records, underwear, and other such goods. When Scrappy-Doo was introduced to the series in 1979, he, Scooby, and Shaggy became the foci of much of the merchandising, including a 1983 Milton-Bradley "Scooby-Doo and Scrappy-Doo" board game. The first "Scooby-Doo" video game appeared in arcades in 1986, and has been followed by a number of games for both home consoles and personal computers. "Scooby-Doo "multivitamins also debuted at this time, and have been manufactured by Bayer since 2001. "Scooby-Doo" merchandising tapered off during the late 1980s and early 1990s, but increased after the series'
Scooby-Doo joined with a new Hanna-Barbera show, "Dynomutt, Dog Wonder", to create "The Scooby-Doo/Dynomutt Hour" (the show became "The Scooby-Doo/Dynomutt Show" when a bonus "Scooby-Doo, Where Are You!" rerun was added to the package in November 1976). Joe Ruby and Ken Spears, now working for Silverman as supervisors of the ABC Saturday morning programs, returned the program to its original "Scooby-Doo, Where are You!" format, with the addition of Scooby's dim-witted country cousin Scooby-Dum, voiced by Daws Butler, as a recurring character. The voice cast was held over from "The New Scooby-Doo Movies" save for Nicole Jaffe, who retired from acting