The most recent episode of WandaVision brought the idea of the “Nexus” into the Marvel Cinematic Universe. Thanks to a carefully designed advert, created to be an easter egg teasing what’s to come, the scene has sparked a great deal of discussion surrounding the Nexus.
However, while hardcore fans of Marvel Comics might be quite used to the concept of the Nexus, there are plenty of casual members of the audience who may not be familiar with the img material. So as the show continues to explore comic icons like the twins, mess around with characters from other universes, and play on the introduction of the Nexus, there’s plenty of things to keep in mind about the reality-altering entity.
It’s not completely clear how the Nexus of all Realities was actually created. It may have always have been there, pre-dating the universe itself. Perhaps it was created alongside The Big Bang. There’s even been theories that some kind of god could have actually created it.
The mystery surrounding the Nexus is an odd one. Oftentimes in Marvel Comics, some strange entity like this is explained away, or given a definitive origin. The Marvel Cinematic Universe may choose to go this route or follow the comics that inspired the show and continue the mystery.
There are a number of characters from across the Marvel Universe known as Nexus Beings. They could be considered to be deities in some ways. They are people who can actually impact reality through their own magic or powers.
Wanda Maximoff is one of those Nexus Beings in the comics, with her abilities demonstrating that she can completely change reality, in part thanks to her hexes. For the MCU, WandaVision is starting to show the Scarlet Witch may, indeed, be a Nexus Being in this on-screen reality too.
The Time Variance Authority has an incredibly important role in the comics, as it watches over the timeline of the Marvel Universe, ensuring that everything remains intact. For the MCU, Loki will be introducing a small-screen version of the TVA.
One of their other duties is to observe Nexus Beings, through the Nexus of all Realities, to ensure that they are not tampering with reality and the universe too much. It’s extremely possible that the TVA may hold this role in the MCU, as they try to fix some of the most confusing aspects of the Marvel timeline.