Quasar #19 was published by Marvel Comics on February 1, 1991, as part of a series that began in 1989. Mark Gruenwald writes, and art comes from George Roussos, Greg Capullo and Keith Williams. This 36-page issue features Doctor Strange, Thanos, Moondragon, Hyperion and Quasar, among 25 characters cataloged on VerseDB.