If you are following the Marvel Cinematic Universe (MCU) closely, then you know that the final Infinity Stone, the Soul Stone has yet to show up.
Fans are racking their brains trying to figure out where – or when – the Soul Stone might appear. Even the directors of Avengers: Infinity War, Anthony and Joe Russo are trolling fans with this tweet:
— Russo Brothers (@Russo_Brothers) March 16, 2018
And of course, the brothers are not answering their own question.
Nonetheless, here is a list of theories fans have come up with so far on the Soul Stone’s location:
It may not be a stone at all, but a planet?
This sixth and final Infinity stone gives users power to control souls.
On top of that, it is able to send them to another dimension called ‘Soul World’. So is the orange planet the Soul World?
Screen Rant theorised that the orange planet is the Soul Stone, or at least a manifestation of it as the first trailer of Avengers: Infinity War starts with a shot of an orange planet while the Soul Stone in Guardians of the Galaxy to be orange.
However, some said this theory has been debunked. The orange planet is actually Titan, Thanos’ home. But what if the stone had been with Thanos all this time?
The Soul Stone is in Wakanda?
Both trailers show an epic battle happening in an African country, most probably in Wakanda. Could the final Infinity Stone be kept at the home of Black Panther?
Some fans believed vibranium is not the only secret Wakanda is keeping, but also the Soul Stone’s location.
It is with Iron-Man
The theory of Tony Stark having the Soul Stone came after the promo art of Avengers: Infinity War was published.
The art shows where each of Infinity Stones first debuted in MCU.
For example, the Space Stone (Tesseract) was in Captain America: The First Avengers while the Power Stone was in Guardians of the Galaxy.
The Reality Stone (Aether) was in Thor: The Dark World; Vision has the Mind Stone in Avengers: Age of Ultron and Doctor Strange was holding the Time Stone aka the Eye of Agamotto without realising it.
And there is an illustration of the Soul Stone with Iron-Man. Does this mean it has been with Tony all this while?
Another reason to back up this theory is, in Iron Man 3, Tony tosses the arc reactor in his chest into the ocean but in Avengers: Infinity War, he has a new arc reactor.
Thus, fans are claiming the new arc reactor might be the Soul Stone.
It lies within Heimdall
This is seems a bit far-stretched but some fans are speculating the Soul Stone is with Heimdall. This explains why he can see ‘every soul’ across the Nine Realms.
All we fans can do for now, other than theorising, is to wait for Avengers: Infinity War to premiere on April 2018.