9. The Deviants
With the Eternals set to make their cinematic debut in February 2021, there's little doubt they will share the screen with their longtime adversaries, the Deviants. There isn't much known about the film prior to its release, but a brief synopsis indicates that it will be set following the events of Avengers: Endgame.
In the movie, the Eternals are expected to come out of hiding so they can save Earth from the Deviants. In the past, leaks have been few and far between for MCU films, but the toy industry let something slip, and as a result, there is at least one known Deviant who will appear in the film.
Thanks to a list of Funko POP! figures set to debut alongside the film, it's clear that Kro and Arishem will be in the movie. In the comics, Kro is the leader of the Deviant race. Arishem isn't a Deviant and is better known as Arishem the Judge — the leader of the Celestials.
There are dozens of Deviants in the Marvel Universe, and while it's unlikely they will all appear, there are plenty of characters to choose from, so expect to see at least one Deviant for every Eternal in the movie.