Will Avengers: Doomsday Unravel Doctor Doom’s Backstory Through Sentry’s Powers?

Excitement is building for Avengers: Doomsday as fans speculate whether the Russo brothers will weave Doctor Doom’s complex backstory into the narrative using Lewis Pullman’s character Bob, also known as Sentry.

With the film’s production wrapping at Pinewood Studios in England earlier this year, and Robert Downey Jr. stepping into the iconic villain role, the stage is set for a multiversal epic.

The recent portrayal of Sentry’s powers in Thunderbolts*, released earlier in 2025, has sparked theories about a deeper connection, making this a hot topic among enthusiasts.

What Role Did Sentry Play in Thunderbolts*?

Sentry, portrayed by Lewis Pullman, emerged as a standout in Thunderbolts*, a 2025 Marvel release. The film showcased Bob as a mild-mannered man who gains godlike powers from a Super-Soldier experiment orchestrated by Valentina Allegra de Fontaine, as detailed in a Marvel.com interview with Pullman on May 6, 2025.

His dual nature, splitting into the heroic Sentry and the destructive Void, drove the plot, with a post-credits scene hinting at a larger role in the MCU.Production notes from Wikipedia, updated September 20, 2025, confirm Thunderbolts* filmed a scene tying into Avengers: Doomsday, suggesting early integration.

The character’s comic origins, debuted in Sentry #1 (2000) by Paul Jenkins and Jae Lee, emphasize his immense power and mental struggles, which could mirror Doom’s own layered history.

Could Sentry’s Powers Link to Doctor Doom’s Origin?

The speculation hinges on whether Avengers: Doomsday will use Sentry’s powers to explore Doctor Doom’s backstory.

In comics, Victor von Doom hails from Latveria, gaining his intellect and abilities through a mix of science and mysticism after a tragic childhood, as noted in the Marvel Encyclopedia updated 2023.

Sentry’s own origin involves a secret experiment, a parallel that fans on Reddit’s r/MarvelStudios, posted September 25, 2025, suggest could be a narrative bridge.One theory posits that the Russo brothers might depict Doom experimenting with similar power-enhancing tech, leading to Sentry’s creation or manipulation.

A Variety article from July 2024 highlighted the directors’ interest in complex villains, aligning with Doom’s multidimensional character. However, no official script details confirm this, leaving it as an intriguing possibility.

How Might the Russo Brothers Approach This Setup?

The Russo brothers, known for Avengers: Infinity War and Endgame, bring a knack for interconnected storytelling to Avengers: Doomsday.

With filming wrapped in September 2025 and a release date of December 18, 2026, per Wikipedia, they have time for reshoots to refine such a plot.

Alan Silvestri’s return as composer, confirmed in July 2024, could underscore emotional beats tying Sentry and Doom together.A potential setup might involve Doom harnessing the Void’s energy, reflecting his comic mastery over dark forces.

The cast, including Chris Hemsworth and Vanessa Kirby, alongside Pullman, offers a broad canvas, as noted in a Deadline report from June 25, 2025. Yet, the directors’ focus on a multiversal threat, as per a July 2024 SDCC panel, might limit Sentry’s role to a catalyst rather than a full backstory reveal.

What Evidence Supports This Theory?

Supporting evidence includes the Thunderbolts* post-credits scene, where Sentry’s powers destabilize, hinting at external influence, possibly Doom’s, according to a Screen Rant analysis on May 10, 2025.

The Russo brothers’ early talks with writer Christopher Markus, reported by The Hollywood Reporter in July 2024, focused on blending legacy characters, making a Doom-Sentry link plausible.

Still, without leaked scripts or cast comments, this remains speculative.The film’s Phase Six placement suggests a buildup to Secret Wars, where Doom’s origin often plays a key role.

A CBR article from September 2025 speculated that Pullman’s reprisal of Sentry could serve as a narrative device, though no casting confirmation exists beyond Thunderbolts*.

Some Closing Thoughts

Avengers: Doomsday holds immense potential to intertwine Sentry’s powers with Doctor Doom’s backstory, offering a fresh take under the Russo brothers’ direction.

While evidence leans toward a setup, the full picture awaits the film’s release.

Fans can look forward to a richly layered narrative, with Pullman’s Sentry possibly serving as a key to unlocking Doom’s past.

The anticipation is palpable, and this theory adds another layer of excitement to the upcoming saga.

Stay tuned to this space as we bring you more theories, takes, speculations and rumors surrounding this magnum opus of a film.