If you listened to or watched the MCU CosmicCast this week, you may have caught a pretty cool rumor about The Eternals that has popped up over the last couple of days.
A week ago, casting breakdowns for The Eternals characters surfaced, meaning that casting is now taking place for the movie. However, additional breakdowns for two of the characters in The Eternals have also shown up. This means that those two characters may be in the process of being cast for something before The Eternals.
The two characters are “Karen”, who everything is trying to figure out who exactly she is. She doesn’t appear to be Sersi, as both Karen and Sersi were separate listings on The Eternals casting breakdown. The other character is “Piper”, who from the description sounds like a MCU version of the Eternal known to comic readers as “Sprite”.
Obviously this is sounding like they could be something like a post-credits stinger for an upcoming movie or a cameo of some sort. There are two “cosmic” movies coming before The Eternals: Captain Marvel and Avengers 4. It could be something intended for either of those, or it could be for something else after them.
Back in April when I originally broke the news about The Eternals, I was told that the original plan was to introduce them in Guardians of the Galaxy Vol. 3. With that movie currently delayed and The Eternals likely to be released before it, the possibility is there that the plans had to be altered and they would introduce some of The Eternals in a different movie.