The Amazing Spider-Man 13 (June 1964)
Peter appears to be pushing Betty away at this point, but he might just be obtuse. The first appearance of Mysterio is decent, but not anything special. Lee spends a lot of time on Mysterio’s origin and the nature of his outfit–Lee’s pacing is great here, the amount of story he fits into the issue, but it’s barely about Spider-Man.
The Spider-Man story this issue is Peter worrying about developing a multiple personality or a Jekyll and Hyde type problem. Well, for a couple pages anyway. Then he’s worried about Aunt May’s mortgage payment (something he paid in full the first or second issue, for a year, so either Lee forgot or it’s been a while… and Peter missed out on Midtown’s summer vacation).
There’s just way too little Peter Parker and when there is Peter Parker, it’s usually as Spider-Man… so it’s not as compelling.
The Menace of… Mysterio!; writer and editor, Stan Lee; artist, Steve Ditko; colorist, Stan Goldberg; letterer, Art Simek; publisher, Marvel Comics.