Sentry (Robert Reynolds) debuted in September 2000 in The Sentry #1 from Marvel Knights, created by Paul Jenkins and Jae Lee. The character draws his powers from a serum administered in 1947, becomes a cornerstone of Bendis's New Avengers (2005-2010), dies in Siege #2 (February 2010) at the hands of Thor, then returns in 2021 via Cates before his MCU debut in Thunderbolts (2025) with Lewis Pullman.
Sentry holds a singular place in Marvel mythology: presented as a forgotten hero of the 1960s whose existence was erased from collective memory, the character is in fact a modern creation by Paul Jenkins and Jae Lee, published under the Marvel Knights imprint in September 2000. This meta construction — a superhero everyone supposedly knew without remembering him — serves as the premise for a five-issue miniseries that plays with Silver Age conventions while imposing a dark tone. Robert Reynolds, an alcoholic holed up in a suburban house, gradually rediscovers that he was once one of the most powerful superhumans on the planet, endowed with "the power of a million exploding suns," before erasing his own past to neutralize an inner threat named The Void.
From its very first pages, Sentry carries an openly psychiatric subtext: the yellow-and-blue cape is never separated from a mental fragility that ends up bleeding into every arc of the character. Brian Michael Bendis's run on New Avengers between 2005 and 2010 turns Sentry into a narrative pivot, at once the team's ultimate force and an emotional ticking time bomb. His death in Siege #2 in February 2010, torn apart by Thor above Asgard, closes five years of intense presence before a return orchestrated by Donny Cates in the King in Black cycle (2021), then a solo series in 2023. The character reaches the mainstream in May 2025 with the film Thunderbolts*, where Lewis Pullman plays him under the name Bob Reynolds, sparking a wave of interest in the early print issues and their publishing history. This article traces the birth of Sentry, his powers, his integration into the New Avengers, his death in Siege, his modern resurrection, and the speculative stakes tied to his MCU debut.
The creation of Sentry at Marvel Knights in 2000 by Jenkins and Lee
The Sentry miniseries launched in September 2000 under the Marvel Knights imprint, an editorial outfit started in 1998 under the direction of Joe Quesada and Jimmy Palmiotti to deliver mature stories on the fringes of the traditional Marvel Universe. Paul Jenkins, a British writer who had passed through 2000 AD and Vertigo, delivered an original pitch: Robert Reynolds, a former great hero who has been forgotten, wakes up one morning with the sudden conviction that he was the most powerful of all Marvel superhumans. The entire universe has forgotten him, including Reed Richards, Charles Xavier, and Captain America. Jae Lee, the South Korean artist who broke out on Hellshock and Inhumans, drew the pages in a stylized, almost iconographic style that stood apart from the realism dominant at Marvel at the time.
The editorial gimmick pushes the meta layering far. Marvel published several faux vintage issues alongside it — Sentry/Spider-Man, Sentry/X-Men, Sentry/Fantastic Four, Sentry/Hulk — falsely dated to the late 1960s to support the fiction of a hero erased from canon. These tie-ins, written by Jenkins and illustrated by various artists, accompanied the main miniseries and today amount to secondary key issues for collectors. The conclusion of the miniseries reveals that Robert Reynolds himself asked Mister Fantastic to erase his existence from the world in order to prevent the resurgence of his evil alter ego, The Void. This twist, sealed across five issues, was enough to establish the character as a lasting curiosity.
The character's central retcon comes into focus in Sentry #1 (2000) and then in later appearances: Robert Reynolds supposedly obtained his powers in 1947 after drinking a serum derived from the Super-Soldier program, multiplying the effect of the Erskine serum by an incalculable factor. This fictional precedence over the creation of the Fantastic Four (1961) positions Reynolds as the first modern superhuman in Marvel canon, predating Captain America in terms of documented activity, since the serum supposedly gave him cosmic powers while Steve Rogers received only a physical boost. The memory retcon — the idea that 1960s readers would have known Sentry but forgotten him — remains a one-of-a-kind editorial stroke of genius in Marvel's recent history.
Sentry's cosmic powers and the psychotic persona, The Void
Sentry's stat sheet, as it stabilizes after the original miniseries, makes the character one of the most powerful superhumans in modern Marvel canon. The tagline "the power of a million exploding suns" recurs regularly in the thought balloons of Reed Richards or Tony Stark whenever it comes to gauging Reynolds. In concrete terms, Sentry combines supersonic flight, cosmic-class superhuman strength, light-energy projection, solar plasma generation, telekinesis, limited telepathy, multi-spectrum vision, and a near-instant healing factor. Several scenes in the Bendis runs show Reynolds lifting entire buildings, crossing the atmosphere with ease, and surviving blasts that would have killed Thor or Hulk.
The flip side of this power is the character's chronic mental instability. Robert Reynolds suffers from schizophrenia diagnosed in the original miniseries, a condition worsened by the neurological effects of the 1947 serum. The Void, his dark alter ego, operates as an externalized psychic projection: every heroic act by Sentry corresponds to an equivalent attack by The Void on a civilian target. From 2000 on, writer Paul Jenkins lays out this moral equation: being Sentry means accepting The Void, and vice versa. Mister Fantastic's stopgap solution — erasing collective memory — rests on the belief that forgetting Sentry also deactivates The Void, a hypothesis that proves false in the very next runs.
The Void persona evolves across the runs. In the 2000 miniseries, it appears as a formless shadow silhouette, sometimes taking the shape of a nightmarish face. Bendis's Dark Avengers (2009-2010) makes it a demon with a stable appearance, able to operate independently of Reynolds. Donny Cates, in the King in Black cycle (2021) and then the 2022 Sentry mini, reinterprets The Void as a cosmic entity potentially tied to the primordial darkness of the Marvel universe, opening the door to future connections with Knull or Cyttorak. This redefinition work plants the character in a near-horror reading of the psyche: Sentry is no longer just a borderline hero, he becomes the vessel of a cosmic horror. To place this hero-monster duo logic within Marvel history, modern comics to invest in 2020-2026 document how psychological arcs are valued on the collector market.
The Bendis run on New Avengers 2005-2010 and integration into the Marvel Universe
After the 2000 miniseries and a few scattered appearances, Sentry remained a marginal character until Brian Michael Bendis picked him up for New Avengers #1 (January 2005). The pitch was airtight: following the Avengers Disassembled event (2004), the Avengers are in tatters and Bendis rebuilds the team around an unexpected core (Captain America, Iron Man, Spider-Man, Wolverine, Luke Cage, Spider-Woman). Robert Reynolds, found in the middle of an existential crisis in his suburban home, joins the team over the course of the early arcs. The character immediately gained a weekly visibility he had never enjoyed, with a regular presence in New Avengers, Mighty Avengers, and then Dark Avengers starting in 2008.
The narrative integration runs through several foundational sequences. In the New Avengers: Illuminati one-shot (May 2006), Sentry is revealed as a recent member of the secret council alongside Mister Fantastic, Iron Man, Charles Xavier, Black Bolt, Namor, and Doctor Strange, which restores him to the top of the Marvel hierarchy. Civil War (2006-2007) sees him line up with Tony Stark's pro-registration side, a choice that foreshadows the character's downward spiral. During Secret Invasion (2008), Sentry is the team's nuclear weapon: the sequence where he obliterates the Skrull mothership above Manhattan remains one of the most cited displays of power in the run. Norman Osborn, having become director of H.A.M.M.E.R. after Dark Reign, manages to manipulate Reynolds by playing on his schizophrenia and enlists him in the Dark Avengers as a corrupted version of Captain Marvel/Sentry.
The Bendis run on Dark Avengers #1 (March 2009) — art by Mike Deodato Jr. — makes Sentry the unwitting mascot of the Dark Reign. Alongside Bullseye (as Hawkeye), Daken (as Wolverine), Moonstone (as Ms. Marvel), and Venom (as Spider-Man), Reynolds becomes the public icon of a corrupted team. The character gradually loses control, The Void takes over, and the arc concludes with the events of Siege in 2010. For collectors looking to reassemble the Bendis cycle, New Avengers #7-8 (July-August 2005) marks Sentry's return to the main team, Mighty Avengers #1 (May 2007) confirms his status, and Dark Avengers #1 opens his downfall arc. Value ranges vary widely by grade — a companion guide on CGC vs CBCS vs PGX helps you choose the grading service suited to these modern issues.
The death of Sentry in Siege #2 (February 2010) at the hands of Thor
The Siege event, written by Brian Michael Bendis and drawn by Olivier Coipel, was published across four issues between January and May 2010. It closes out a decade of Marvel cross-events (House of M, Civil War, Secret Invasion, Dark Reign) and marks the end of Norman Osborn's reign. The pitch is tight: Osborn launches an invasion of Asgard, then floating above Broxton (Oklahoma) since J.M. Straczynski's Thor relaunch. Sentry, manipulated by Osborn and by The Void that has definitively taken over, becomes the armed muscle of the assault. As early as Siege #1 (March 2010), Reynolds destroys part of the Asgardian city. Siege #2 (April 2010) escalates: The Void kills Loki in a sequence that has become a reference point for Loki collectors.
The character's end is consummated in Siege #4 (June 2010): Thor strikes Reynolds with Mjolnir, hits him with the maximum electrical discharge, then finishes him off to prevent The Void from re-forming. Robert Reynolds's body is then incinerated and hurled into the Sun by Thor himself, a ritual gesture that closes the arc and symbolically frees Asgard. This death was designed to be permanent — in several interviews Bendis describes his intent to take the character off the board to clear the narrative ground. Sentry stayed dead for more than five years, an exceptional situation for a top-tier Marvel character in an era when event deaths were generally resolved within two years at most.
For the collector, Siege #2 (February 2010) marks the first appearance of The Void at full power and the death of Loki; Siege #4 (June 2010) makes Sentry's death official. These two issues carry a moderate but stable value, occasionally boosted by MCU news. The Coipel variants and the 1:25 ratios remain sought after, particularly on Siege #1 and #4. The end of Sentry also serves as an editorial pivot for Avengers vs X-Men (2012) and Original Sin (2014), which reopen the debate over the place of unstable heroes in the Marvel Universe. A free estimate of these Siege issues via My Comics Collection gives you the current value ranges in seconds, especially useful before a purchase or a resale.
The resurrection of Sentry via Cates in King in Black 2021 and the solo series
Sentry's return begins quietly in Doctor Strange: The Last Days of Magic (2016), then in the Sentry miniseries by Jeff Lemire and Kim Jacinto in 2018-2019. This five-issue series, published between July and November 2018, brings Reynolds back into a pocket reality where he relives his heroic days on a loop under the control of the Angel. Lemire approaches the character through the lens of mental health, in continuity with the All-New Wolverine run and Black Hammer. The series lays the groundwork for an official return to continuity without fully triggering it.
Donny Cates completes the operation during King in Black (December 2020 - April 2021), an event signed with Ryan Stegman that sees Knull, the god of the symbiotes, invade Earth. Robert Reynolds is resurrected by the residual forces of the Sentry and takes part in the final battle. Cates leverages the primordial-darkness mythology to tie The Void to an even broader cosmic register, which opens the door to a future solo series. That series, Sentry, was published across four issues between August and November 2022, written by Jeff Lemire (returning) with art by Kim Jacinto. The mini explores Reynolds's psyche after the resurrection and establishes a lasting instability.
On the collecting side, the key issues of the return deserve attention. Sentry (2018) #1 — the first appearance of the Angel — trades at accessible prices in CGC 9.8 but has seen its trade volume climb since the Thunderbolts announcement. King in Black #1 (December 2020) is a pivotal issue whose value depends on the variants (Stegman 1:25, Skan, virgin). Sentry (2022) #1 remains an entry-level investment with strong potential if the character gains a foothold in the MCU. Collectors anticipating the Phase 6 levers will find in MCU Phase 6 comics to anticipate a precise reading framework for telling serious bets apart from risky speculation. The broader logic of the King in Black cycle extends well beyond Sentry and also concerns the historic symbiote hosts (Eddie Brock, Cletus Kasady, Flash Thompson), which creates cross-opportunities documented in undervalued comics 2026 sleeper issues.
MCU speculation 2025: Thunderbolts and Lewis Pullman in the role of Bob
May 2, 2025 marks Sentry's official entry into the Marvel Cinematic Universe with the release of the film Thunderbolts* (spelled with an asterisk), directed by Jake Schreier. Actor Lewis Pullman (Top Gun: Maverick, Salem's Lot) plays Bob Reynolds, presented as an amnesiac test subject of the Sentry program run by Valentina Allegra de Fontaine (Julia Louis-Dreyfus). The film gradually reveals the character's two personas: Bob the lost human, then Sentry the superhuman with the golden aura, then Void the dark antagonist. This acting triptych largely respects the print canon established between 2000 and 2010, with a few adjustments for cinematic storytelling.
The casting of Lewis Pullman initially replaced Steven Yeun (Beef, The Walking Dead), announced in March 2023 and then released in January 2024 for scheduling reasons. This transition drew sustained media coverage, propelling the character into the news several months before release. The impact on the collector market was gradual: Sentry #1 (September 2000) saw its eBay sales climb steadily between the Yeun announcement (2023) and the film's release (May 2025). The Jae Lee variants and the original cover saw several peaks, particularly in CGC 9.8 white pages.
The medium-term projection depends on the rollout of Phase 5 and Phase 6 of the MCU. If Marvel Studios confirms Sentry's presence in Avengers: Doomsday (announced for 2026) or Avengers: Secret Wars (2027), the value of Sentry #1 (2000) should continue its climb, the way Daredevil #1 (1964) did ahead of the Netflix series. The historic Thunderbolts comics (Incredible Hulk #449 from January 1997 for the first appearance) also benefit from a halo effect: the character joins a team whose print legacy goes back to Kurt Busiek and Mark Bagley. To anticipate the editorial moves tied to this MCU integration, the tracking documented in Thunderbolts comics MCU 2027 speculation offers an issue-by-issue reading grid, while the key issue comics pillar contextualizes Sentry among the other emerging MCU bets.
FAQ — History of Sentry
Who created Sentry, and when?
Sentry was created by writer Paul Jenkins and artist Jae Lee. The character's first appearance is in The Sentry #1, published by Marvel Knights in September 2000. The miniseries runs five issues total and plays on the fiction of a forgotten superhero from the 1960s. The memory retcon set up by Jenkins leads the reader to believe that Robert Reynolds had been a Marvel cornerstone since 1947, predating even Captain America. This meta construction remains unique in recent Marvel publishing history and partly explains the enduring fascination with the character.
What exactly are Sentry's powers?
Sentry combines supersonic flight, cosmic strength, solar light-energy projection, telekinesis, limited telepathy, multi-spectrum vision, and a near-instant healing factor. The canonical tagline "the power of a million exploding suns" places him in the cosmic tier of Marvel superhumans, on the level of Thor or an enraged Hulk. The flip side remains mental instability: Robert Reynolds suffers from schizophrenia worsened by the neurological effects of the 1947 serum, and his alter ego The Void regularly displays destructive behavior on par with his heroic deeds. This duality underpins the character's entire drama.
How did Sentry die?
Sentry dies in the Siege event in 2010, written by Brian Michael Bendis and drawn by Olivier Coipel. Manipulated by Norman Osborn, Reynolds attacks Asgard under the total influence of The Void. In Siege #4 (June 2010), Thor strikes Reynolds with Mjolnir and finishes him off to prevent The Void from re-forming. The body is then incinerated and hurled into the Sun. This death remains one of the most definitive of Marvel's 2000-2010 decade, with the character staying absent for five years before a return that began in 2016 and was confirmed during King in Black in 2021.
What are the best Sentry runs to read?
Three runs structure any serious reading of the character. The original miniseries The Sentry (Marvel Knights, 2000) by Paul Jenkins and Jae Lee lays the foundation and remains the entry-point read. Brian Michael Bendis's run on New Avengers (2005-2010) and Dark Avengers (2009-2010) weaves Reynolds into the Marvel narrative fabric and sets up his downfall. The Sentry (2018) mini by Jeff Lemire and Kim Jacinto reopens the character through the mental-health angle, followed by the Sentry (2022) mini that wraps up his post-King in Black resurrection. For a newcomer, starting with the 2000 mini and then jumping to Lemire 2018 remains the most efficient path.
Does Sentry appear in the MCU?
Sentry joins the MCU with the film Thunderbolts*, released on May 2, 2025, where Lewis Pullman plays Bob Reynolds. The film presents the character as an amnesiac test subject of the Sentry program run by Valentina Allegra de Fontaine. The Bob / Sentry / Void triptych is respected on screen, with a few narrative adjustments specific to the film format. Actor Steven Yeun had been announced first in March 2023 but was replaced by Pullman in January 2024 for scheduling reasons. The character's MCU future depends on the Phase 6 announcements, particularly Avengers: Doomsday and Avengers: Secret Wars slated for 2026 and 2027.