Pif Gadget #1635 was published by Editions Vaillant on October 1, 1976, as part of a series that began in 1945. François Corteggiani and Jean Tabary write, and art comes from Guillermo Mordillo, José De Huescar and Marc Jean Pierre Moallic. It features Pif, Hercule, Placid, Muzo and Léo, among 7 characters catalogued on VerseDB.