Did Avengers: Endgame Tease Namor?
3. How Endgame Teases Atlantis
So, where does this supposed Namor Easter egg occur in Endgame? Relatively early on in the film, actually - just after the five year time jump comes into effect.
Attempting to retain some semblance of the Avengers, Black Widow holds a conference call with Captain Marvel, War Machine, Rocket and Okoye. The head of the Dora Milaje is present to relay information regarding earthquake tremors off the coast of Wakanda. When pressed on the question by Natasha, she simply replies that Wakanda will simply leave them be.
It's potentially Vague, but the exchange feels deliberate. Too much of Namor's recent history is tied up with Wakanda for it to be nothing, and Nat's anxiety clearly means there's something more to these tremors than meets the eye.
Of course, this isn't the only instance where Namor has been teased in the MCU. A blip on a S.H.I.E.L.D. map in Iron Man 2 seemingly confirmed that the agency were monitoring an underwater locale in the South Atlantic. What else could it possibly be other than Atlantis?