Martin Mull participates in "The Cool Kids" panel during the Fox Television Critics Association Summer Press Tour on Aug. 2, 2018, at The Beverly Hilton hotel in Beverly Hills, Calif. Mull, whose droll, esoteric comedy and acting made him a hip sensation in the 1970s and later a beloved guest star on sitcoms including “Roseanne” and “Arrested Development,” died June 28. He was 80. Mull, who was also a guitarist and painter, came to national fame with a recurring role on the Norman Lear-created satirical soap opera “Mary Hartman, Mary Hartman,” and the starring role in its spinoff, “Fernwood Tonight." His first foray into show business was as a songwriter, penning the 1970 semi-hit “A Girl Named Johnny Cash” for singer Jane Morgan. He would combine music and comedy in an act that he brought to hip Hollywood clubs in the 1970s. Mull often played slightly sleazy, somewhat slimy and often smarmy characters as he did as Teri Garr's boss and Michael Keaton's foe in 1983's “Mr. Mom.” He played Colonel Mustard in the 1985 movie adaptation of the board game “Clue,” which, like many things Mull appeared in, has become a cult classic. The 1980s also brought what many thought was his best work, “A History of White People in America,” a mockumentary that first aired on Cinemax. Mull co-created the show and starred as a “60 Minutes” style investigative reporter investigating all things milquetoast and mundane. Willard was again a co-star. In the 1990s he was best known for his recurring role on several seasons on “Roseanne,” in which he played a warmer, less sleazy boss to the title character, an openly gay man whose partner was played by Willard, . Mull would later play private eye Gene Parmesan on “Arrested Development,” a cult-classic character on a cult-classic show, and would be nominated for an Emmy, his first, in 2016 for a guest run on “Veep.”