In "The Avengers" #1 (September 1963), the Hulk became a founding member of the title's eponymous superhero team. By "The Avengers" #3, overuse of the gamma-ray machine rendered the Hulk as an uncontrollable, rampaging monster, subject to spontaneous changing. In "Tales to Astonish" #59 (September 1964) the Hulk appeared as an antagonist for Giant-Man. The series established stress as the trigger for Banner turning into the Hulk and vice versa. It was during this time that the Hulk developed a more savage and childlike personality, shifting away from his original portrayal as a brutish but not entirely unintelligent figure. Also, his memory, both long-term and short-term, would now become markedly impaired in his Hulk state. "Tales to Astonish" #64 (February 1965) was the last Hulk story to feature him speaking in complete sentences. In "Tales to Astonish" #77 (March 1966), Banner's and the Hulk's dual identity became publicly known when Rick Jones, mistakenly convinced that Banner was dead (when he actually had been catapulted into the future), told Major Glenn Talbot, a rival to Banner for the affections of Betsy Ross, the truth. Consequently, Glenn informed his superiors and that turned Banner into a wanted fugitive upon returning to the present.