6) The Celestials
If Eternals had been a hit movie, there’s be no question what these giant, mega-powerful cosmic beings would be up to in the MCU. Much like the (fairly) recent comics, Arishem the Judge would come to Earth to see if humanity was worthy of being allowed to live. It’s a team-up that required the Avengers, Eternals, and the X-Men to solve. As such, the Celestials would be a great, seemingly overwhelming foe for the third saga of the MCU after Kang inevitably gets defeated in Phase Six. But Eternals wasn’t a hit movie, and the Celestials may pay the narrative price and be relegated to obscurity.
