Scooby-Doo of Scooby-Doo", and "Scooby's Mystery Funhouse", the rerun package remained on the air until the end of the 1986 season. "Scooby-Doo" was restored to a standalone half-hour in 1983 with "The New Scooby and Scrappy-Doo Show" in 1983, which comprised two 11-minute mysteries per episode in a format reminiscent of the original "Scooby-Doo, Where Are You!" mysteries. Heather North returned to the voice cast as Daphne, who in this incarnation solved mysteries with Shaggy, Scooby, and Scrappy while working undercover as a reporter for a teen magazine. This version of the show lasted for two seasons, with the second season
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