"More than one wears the mask."
Spider-Man: Into the Spider-Verse - Easter Eggs & Hidden Details
Easter Eggs
Miles's Phone Contacts
When Miles is trying to call his dad, his contact list includes "B. Bendis" and "S. Pichelli," who are Brian Michael Bendis and Sara Pichelli, the writer and artist who co-created the character of Miles Morales. Another contact is "Steve Ditko," the legendary artist who co-created the original Spider-Man with Stan Lee.
Sam Raimi Trilogy References
The origin story of Peter B. Parker includes several visual nods to Sam Raimi's live-action 'Spider-Man' trilogy. These include the iconic upside-down kiss with Mary Jane in the rain, stopping a train with his webs ('Spider-Man 2'), and a scene where a car is thrown through a café window ('Spider-Man 2').
Alternate Universe Comic Covers
Each time a new Spider-Person is introduced, a comic book cover flashes on screen. These covers are homages to the real-life comics where these characters originate, featuring the art styles of their respective creators like Jason Latour and Robbi Rodriguez for Spider-Gwen.
The 'Clone High' Joke
In Times Square, a billboard can be seen for a movie called "Clone College," a direct reference to the cult classic animated series "Clone High," which was also created by Phil Lord and Christopher Miller, two of the producers and writers of "Into the Spider-Verse."
Earth-616 and Other Universe Numbers
When the multiverse is being explained, several Earth designations appear on screen. These numbers correspond to their designations in the Marvel Comics lore. For example, Miles's universe is Earth-1610 (the Ultimate Universe), Peter B. Parker is implied to be from a universe similar to Earth-616 (the main Marvel universe), and Spider-Gwen is from Earth-65.
Post-Credits Scene: Spider-Man 2099
The post-credits scene features Miguel O'Hara, also known as Spider-Man 2099 (voiced by Oscar Isaac), traveling to Earth-67. This dimension is a reference to the 1967 'Spider-Man' animated series, and the scene hilariously recreates the popular "pointing Spider-Man" internet meme.