There is little doubt that Disney and Marvel Studios went out of their way to make sure there aren't any Avengers: Endgame spoilers that would leak before the film's premiere. However, it looks like there was a clever Endgame Easter Egg hidden in Stan Lee's cameo in Ralph Breaks The Internet.
In the second Wreck-It Ralph film, the late Lee had a silent cameo as a character that Vanellope von Schweetz bumps into while trying to evade some Stormtroopers. Interestingly, Lee appeared to be talking to Iron Man in his brief scene. In addition to that, the number "3000" can be seen behind Lee. Check it out below.
Stan Lee makes a posthumous cameo in Ralph Breaks the Internet alongside Iron Man with the number '3000' in the background. A possible reference to the "I love you 3000" line in Avengers Endgame which would be released 5 months later. pic.twitter.com/plzQ3fjl2g— Movie Details (@moviedetail) August 9, 2019
Of course, it's possible that this is just a mere coincidence. After all, Ralph Breaks The Internet was released on November 2018, a full five months before the Marvel Cinematic Universe flick. On the other hand, fans believed that it was an early tribute to Lee and a non-spoilery reference to one of the most iconic lines in Endgame.
In Endgame, Tony Stark's daughter Morgan finds a sweet way to express her love for her father. Not surprisingly, "I Love You 3000" became an instant catchphrase for fans who truly enjoyed the MCU film. Almost every tribute to Tony had the catchphrase attached to it after the movie premiered.
Avengers: Endgame is currently available on digital. The Blu-ray and DVD will be released on August 13.