New billboards for “Avengers: Doomsday” have gone up in Shanghai, and outlets say one of them hints at a new power for Thor (Chris Hemsworth). The news spread from an X post by an account called Marvel Updates on November 10th, 2026. The group billboard shows Yelena Belova (Florence Pugh), Steve Rogers (Chris Evans), Thor and Cyclops (James Marsden) using their powers. Thor’s lightning does not look like the blue it has had in earlier films. Fans read that as a sign of something new but Marvel has not confirmed it.
The billboard is not proof of anything on its own. Marvel has confirmed that Hemsworth returns in “Doomsday”. The film opens on December 18th, 2026 but nothing from the studio describes a new power. The idea comes from fans who point to the color of the lightning and to a prayer in an earlier teaser. Some headlines call the billboard proof. Treat it as a theory until Marvel shows it. Warning beyond this point there are spoilers for “Avengers: Doomsday” marketing and for older Thor films.
Treat it as a theory until Marvel shows it.”
The billboards were spotted in Shanghai and one of them shows Doctor Doom (Robert Downey Jr.). The other is the group shot, and on it Thor holds his axe, Stormbreaker, with yellow lightning around it. His lightning has been blue in earlier films and in the trailers. On the same billboard Steve Rogers holds Mjolnir, and GamesRadar says the lightning around the hammer is the usual blue. Another X user posted a sharper image of the group shot on the same day. ComicBookMovie.com notes that some fans were already complaining about spoilers on social media.
Fans read the yellow as the Odinforce, which in Marvel Comics is the cosmic and magical energy of the All-Father of Asgard. It is also called the Odinpower and the All-Power, and it gives its holder abilities far beyond those of an ordinary Asgardian. When Thor takes the throne he inherits it, and in his hands it becomes known as the Thorforce. The reaction on X was quick and GamesRadar quotes one fan who writes “I just don’t get why they’d put a massive spoiler for Thor”.
The comics attach a cost to the power. A holder who draws on it too long must enter the Odinsleep, a slumber that recharges it, and is open to attack while under. If the billboard does show the Odinforce, /Film says that could spark a dramatic story, perhaps with Thor willingly embracing the sleep to overpower Doom and save his friends. That is a hard fit for a film with this many heroes. The movie would have to decide whether it wants a hero this powerful asleep when the fight peaks.
The yellow did not start with the billboard. Outlets point to earlier promotional art and a poster where Thor’s lightning is orange or yellow, and an X account called Earth 616 posted about that art on July 12th, 2026, according to /Film. A Thor action figure that leaked before the billboard has a golden helmet and, per Maxblizz, yellow lightning effects. AOL cautions that action figures do not necessarily reflect the film. ComicBookMovie.com says the billboard should not be treated as a big reveal after the figure leak, and GamesRadar says the poster and the toy flew under the radar.
The other clue is a prayer in an earlier “Doomsday” teaser. Thor kneels in a forest with Stormbreaker planted in front of him and asks his late father for “the strength of the All-Fathers”. He says he wants to fight once more and return home to his daughter, Love. Fans took the line as the setup and the lightning as the answer. The teaser is Marvel’s own footage and it asks for strength without naming the Odinforce.
The theory leans on Odin (Anthony Hopkins), who dies of old age in “Thor: Ragnarok”. ComicBook.com says the film’s comic tone gave the moment little room to land and that the MCU has not let Thor cope with his death. The Direct says his spirit fades into yellow energy that stands for the Odinforce on screen and that the same power fueled the Destroyer in “Thor” in 2011. Those are one outlet’s readings of earlier films and Marvel has not tied them to “Doomsday”.
Thor’s power has changed shape from film to film. In “Thor: Ragnarok” he is left without his hammer, which Collider says his sister Hela broke, and Screen Rant says his lightning grows so he can summon it without Mjolnir. In “Avengers: Infinity War” he gets Stormbreaker, an axe built to focus his power. “Thor: Love and Thunder” is where the tone tipped. Hemsworth told GQ it was “too silly”, according to /Film, and ComicBook.com says the film pushed the comedy too far. The Direct adds that the only earlier yellow lightning came through the Thunderbolt of Zeus (Russell Crowe), while Thor’s own stayed blue.
The directors have talked about tone, not power. Joe Russo told CBR that the film carries forward “the Infinity War Thor”, a “warrior who has lost everything, who is seeking meaning through battle”. Hemsworth has described the character as one of “the elders” and neither remark mentions a new power. In the trailers Doom stops Stormbreaker, and Maxblizz writes that this suggests Thor may need another weapon upgrade.
Here is what is on the record: Marvel’s synopsis names Thor among the “familiar heroes” and Hemsworth is on the cast list. The film opens on December 18th, 2026, and GamesRadar gives a UK date of December 16th. Marvel’s teasers were built around Thor and show him praying to his father. No Marvel material says what the lightning on the billboard means and Marvel has not confirmed the Odinforce. The billboard raises the question and leaves it open.
GeekTyrant says the yellow lightning could have another explanation, and GamesRadar notes that a billboard is an odd place to hide a reveal. The Direct points out that the trailers show blue lightning and says that leaves two options. Either the color was changed in the trailers to protect a secret or the power arrives later in the film. AOL says it remains unclear whether the golden helmet on the toy will appear in the movie at all. Each of these readings is as open as the one the fans are making.
A Thor with the Odinforce would be a different hero from the one in “Infinity War”, who needed a new axe to answer Thanos. This one would draw power from his father and not from an object. It fits a film whose Thor teaser is a prayer. /Film calls it a way to treat the character more seriously and GeekTyrant says it could point toward King Thor, a comics version of the character. Both are readings and neither is a report. The risk is the one the comics already name, since a power that puts its holder to sleep is hard to use in a battle that has to keep going.
The next marker is Marvel’s own material, and a new trailer, a poster or the film itself on December 18th, 2026 will show what the lightning means. Until then the billboard is a color, a prayer and a toy, and that is a thin base for a power-up. It is a good question for the film to answer but it is not yet an answer.
What Do You Think? Does Thor need the Odinforce to stand up to Doom, or does a hero this old need a different answer? Would the Odinsleep be a fair price in a film this crowded? And would you rather see the power arrive in “Doomsday” or wait for “Avengers: Secret Wars”?
See you on the next binge!
