Astonishing Tales #20 was published by Marvel Comics on October 1, 1973, as part of a series that began in 1970. Mike Friedrich and Steve Gerber write, and art comes from Frank Giacoia, Herb Trimpe and John Romita. This 36-page issue features Nick Fury, Mockingbird, Ka-Zar, Zabu and Parnival Plunder, among 9 characters cataloged on VerseDB.