It’s funny to look back at 2012’s The Avengers and how the most epic blockbuster movie crossover ever (at the time) now seems almost quaint after experiencing the mindblowing scope of Avengers: Infinity War.
These days, the question that dogs the MCU isn’t “how much longer can this go on?” as much as it’s “how much bigger can this get?” Resetting the Avengers roster with new faces just isn’t enough anymore, not when you’ve introduced a villain who can throw planets at people.
In the wake of the Mad Titan, rumors of Marvel toying with the idea of expanding its galactic boundaries beyond Thanos, Guardians of the Galaxy, and Captain Marvel (which introduces a whole new race of aliens called the Skrulls) via a film about The Eternals makes perfect sense. Now fans just have to make sense of the Eternals themselves.
The Eternal known as The Forgotten One is believed to be the inspiration behind mythical heroes Samson, Beowulf, Gilgamesh, and Atlas; he fought in the Trojan War, performed at least one of the legendary Ten Labors attributed to Hercules, and he was even an Avenger.
Uranos - another important Eternal - is a warlike being who first conquered and settled the planet Titan (which should ring an Avengers: Infinity War bell). His brother is Kronos, whose son is an eventual Eternal ruler named Mentor. This is important because Mentor and his wife Sui-San give birth to a certain purple-hued megalomaniac with a fondness for golden gloves.
Eternals are not immortal per se, but they are incredibly strong, resistant to age, and have accelerated healing. Their individual powers vary wildly and include super strength, telepathy, flight, super-speed, and the ability to manipulate matter at an atomic level. Any movie made about them has a lot of options.
As a source to mine for standalone movies and team-ups, the Eternals are nearly inexhaustible. Imagine adapting every culture's creation myth and adding superhero elements on top of it.
From early conflicts between the Eternals and the Deviants to later inter-family squabbling between Uranos and his brother Kronos to The Forgotten One’s personal work resume, you have enough for endless mind-blowingly epic movies.
Marvel has already tried to make The Inhumans happen with a now-cancelled TV series, but maybe the show failed because the proper groundwork hadn’t been laid in 2017. The Inhumans are directly tied into the Eternals mythos, but also have explicit links to Captain Marvel.
Following the civil war between brothers Uranos and Kronos (won by Kronos), Uranos tried to re-invade Earth but was thwarted by the Kree alien race (Ronan the Accuser from Guardians of the Galaxy is a Kree zealot, and Carol Danvers from Captain Marvel fights alongside the Kree space force).
The Kree captured an Eternal and experimented on it, which gave them the idea to genetically modify a race of super soldiers during the later Kree-Skrull War (the shape-shifting Skrulls are introduced in Captain Marvel).
These altered, super-powered beings are The Inhumans (Black Bolt, Medusa, Karnak, Gorgon, Triton, Crystal, Maximus, and the giant dog Lockjaw).