Blame It on the Booze! At least that’s the story behind Roy Thomas (Marvel) and Denny O’Neil (DC) coming up with the idea of having an unofficial crossover between the Avengers and Justice League of America. What originated at a party with liquid refreshments flowing like the Mississippi spilled over into both series in 1969. Although the JLA was more subtle about it, Roy Thomas dove in headfirst, creating the “Squadron Sinister” to challenge the Avengers. Without going too