Moon Knight episode 4 secretly introduced the MCU’s very first Thanos. The Mad Titan has been portrayed as the greatest threat to the universe by Marvel Studios for the majority of the Infinity Saga. In Avengers: Infinity War, he was able to use the six powerful Infinity Stones to rebalance (aka wipe out half the universe’s population) the universe. Even though Thanos’ actions made him the most infamous villain in the MCU to date, Moon Knight has now unwittingly introduced the first item-collecting villain with the potential to wield all of the universe’s power.
However, because of the limited MCU connections the series has, it has been able to establish Egyptian mythology and introduce some of the powerful beings associated with it, something that Moon Knight previously chose to avoid doing. Introducing The Ennead gives the MCU a godlike Avengers team that has thus far chosen to stay out of human affairs. In addition to Khonshu and Ammit using their powers, there are many other gods in the universe. Taweret and Alexander the Great were revealed to be Ammit’s former avatars in episode 4 of Moon Knight. A first Thanos in the MCU is also hinted at when Heka is mentioned.
Sorcerers of their time are mentioned as Heka priests guarding Alexander the Great’s tomb in the fourth episode of Moon Knight. Heka-Nut, a powerful sorcerer from Marvel Comics who worked with four primal gods, maybe hiding in plain sight. Heka-Nut and Thanos have similar goals in the comics. The Ebon Rose, Darkhold, Serpent Crown, and Sword of Bone are among the so-called Cornerstones of Creation that he hopes to acquire. It took Heka-Nut 500 years to finally fail in his quest for the Sword of Bone, on which he had his heart set. To have the power of Thanos, Heka would have had to acquire the Sword of Bone and other Cornerstones of Creation.
However, the mention of Heka in the fourth episode of Moon Knight does not imply that this comic story is MCU canon. There is a possibility that he was a Thanos thousand of years before Thanos was born, making him the first Thanos in the Marvel Cinematic Universe. A look at the comics revealed that the Sword of Bone can only be wielded by those who are pure of heart. The MCU, on the other hand, could alter this history and reveal that ancient superheroes.
It’s possible that the Darkhold and Heka’s Cornerstones of Creation storyline are both part of the MCU’s past, in which case Moon Knight could also provide additional context. The origins of WandaVision’s magical book have not been revealed, but it is expected to feature prominently in Doctor Strange in the Multiverse of Madness. This could include a confirmation that it is an MCU Cornerstone. In this way, Marvel could replace the Infinity Stones with these artefacts in Phase 4 and beyond and give the franchise its next Thanos.