Beside Fonzie, who else appeared in every episode of the American TV series "Happy Days"?

"Happy Days" is an American television sitcom that aired first-run from January 15, 1974 to September 24, 1984 on ABC. There was a total of 255 half-hour episodes spanning eleven seasons. Created by Garry Marshall, the series presented one of the most successful series of the 1970s, an idealized vision of life in the mid-1950s to mid-1960s Midwestern United States. The show starred Ron Howard as teenager Richie Cunningham, Henry Winkler as his friend Arthur "Fonzie"/"The Fonz" Fonzarelli, and Tom Bosley and Marion Ross as Richie's parents, Howard and Marion Cunningham. "Happy Days" became one of the biggest hits in television history and heavily influenced the television style of its time.

Howard "Mr. C" Cunningham, husband of Marion Cunningham, father of Richie and Joanie, business owner of a hardware store called "Cunningham's Hardware", he is a lodge member, and family man. Frequently seen reading the daily newspaper in his easy chair. Enjoys driving his beloved 1948 DeSoto Suburban. In "Letting Go", he did not want Joanie to go to Chicago, still seeing her as his "little girl". But after talking with Fonzie and realizing how much she has grown up, he supports her going. In "Passages", Howard says that he is proud of Richie and Joanie in Joanie and Chachi's wedding. Howard is one of only two characters (the other being Fonzie) to appear in every episode of the series.