Mork & Mindy/Laverne & Shirley/Fonz Hour

Mork & Mindy/Laverne & Shirley/Fonz Hour is a 1982-1983 American animated television series produced by Hanna-Barbera Productions and Ruby-Spears Enterprises in association with Paramount Television, featuring animated versions of characters from the live-action sitcoms "Mork & Mindy", "Laverne & Shirley" and "Happy Days", all part of the same franchise. This Saturday morning series lasted for one season on ABC.
This show was divided into two segments: "Mork & Mindy" and "Laverne & Shirley with the Fonz". The "Laverne & Shirley" half-hour was the second season of "Laverne & Shirley in the Army", with the addition of The Fonz and his dog Mr. Cool from the earlier cartoon "The Fonz and the Happy Days Gang".
"Mork & Mindy".
In the "Mork & Mindy" segment, in which Robin Williams and Pam Dawber voiced the title characters, a teenaged Mork is sent to Earth from planet Ork to observe the lives of human teenagers and enroll in a local school. As on the original show, Mindy McConnell and her father Fred (voiced by Conrad Janis) are the only Earthlings who know that he is an alien and he sends telepathic reports of his experiences to Orkan ruler Orson (voiced by an uncredited Ralph James). Unlike the original show, Mork is accompanied by his Orkan pet, a pink, six-legged, dog-like creature named Doing (voiced by Frank Welker) which is pronounced as "Doyng". Other characters in the show included Eugene (voiced by Shavar Ross), Hamilton (voiced by Mark L. Taylor), and Principal Caruthers (voiced by an uncredited Stanley Jones).
"Laverne & Shirley with The Fonz".
This segment is a continuation of "Laverne & Shirley in the Army", the only difference being the addition of The Fonz (voiced by Henry Winkler) and his dog Mr. Cool (voiced by Frank Welker; from "The Fonz and the Happy Days Gang") as mechanics in the army camp's motor pool. Cindy Williams quit her role as Shirley on the live-action sitcom "Laverne & Shirley" in August 1982. Conversely, Williams' role in the animated series was taken over by friend Lynne Marie Stewart. Only eight episodes were produced. Thus, the existing segments produced up to that point were rerun for the rest of the series. Except for a few publicity cel paintings, no further plans for the series were made.