General Hospital is the longest-running American television serial drama, airing on ABC. Created by Frank and Doris Hursley, it originally was set it in a general hospital (hence the title), in an unnamed fictional city. In the 1970s, the city was named Port Charles, New York. The series premiered on April 1, 1963. This is a list of notable characters who significantly impacted storylines and began their run, or significantly returned, from the years 1990 to 1999.