Mopsy was the star of a single panel newspaper strip by writer and artist Gladys Parker, one of the few female cartoonist in the 1930s - 1950s.
The panels, which started in 1939, consisted of Mopsy, an attractive working girl modeled on Parker herself, surrounded by a succession of admiring men and her witty responses to their flirting.
Eventually some of these strips were collected in Pageant of Comics, later she was featured in original full-length stories in a comic of her own from St. John starting in 1948. This lasted for 19 issues. Starting in 1955 some of these were reprinted in Charlton’s TV Teens Comics, even though she was not a teenager, and had nothing to do with television.