Sentry's History
Early Years
In March 1947, Canada's Department K and remnants of the United States' Operation: Rebirth pooled their resources to become Project: Sentry, an attempt to not only recreate the Super Soldier Serum, but in post-war hubris, magnify its effects one hundred thousand times over. Unfortunately, within a thirty years it had been divided nearly a thousandfold into isolated sub-projects, with lab work farmed out to private contractors. The overall administration of the Project was virtually nil. Precisely where all of its resources ended up over the decades, what they might have begun, and where they ultimately led, is currently unknown.
Over ten years later, Robert Reynolds, a meth addict, broke into the laboratory of an unnamed professor. It was there that he discovered the Golden Sentry Serum. Consuming the compound, Robert Reynolds gained the power of a million exploding suns. This act killed his partner and the lab's guards. He then asked the Professor to make more for himself.
Project: Sentry, appalled at what their irresponsibility had wrought, persuaded Reynolds to let them test his powers at their facility, but they could not contain him for long, nor curb his desire to use his powers for the greater good of all, and the Sentry debuted before a world that had almost forgotten superhuman Samaritans. After trouncing the school bully who had tormented him, Reynolds sewed together a costume and made his debut as the heroic Sentry.
The Sentry was an optimistic and socially accepted hero who stood in marked contrast to the mostly freakish nature of the other heroes. He had connections to Mister Fantastic, Iron Man, the Hulk, Spider-Man and Professor X. One of very few super heroes active during the years just prior to the Fantastic Four's emergence, Sentry gained new importance when the new wave of heroes rose to prominence. Almost instantly deducing Spider-Man's secret identity, he became a role model for the young hero, as well as an ally to the X-Men, an equal to Reed Richards, and a friend to the outcast Hulk. The Sentry even battled Doctor Doom alongside the Fantastic Four and defeated his greatest enemy, the General, with the X-Men's aid.
During this period, the Sentry married the love of his life, Lindy, and took the young Scout as his sidekick. Lindy got swept up in it all, excited at the prospect of meeting other heroes. She eventually learned of Robert's addiction but did nothing about it. She even feared that taking the serum must have awakened something of biblical proportions. She later stated that she should have killed him on their wedding night.
The Void
The arrival of the Void, a shadowy monster that exploited its enemy's greatest fears, ended the Sentry's charmed life. The Void nearly killed Scout, drove Hulk into a rampage, and murdered over one million people in Manhattan. Discovering that the Void had been the dark aspect of his own powers, the Sentry teamed with Reed Richards and Dr. Strange to create a system which made Earth's entire population -- including Richards, Strange, and the Sentry -- forget his existence. With the Sentry inactive and forgotten, the Void vanished.
In reality, the Void was Reynolds' own repressed persona, powered by the Sentry's own powers. The General had captured Reynolds and brought him to mutant illusionist Mastermind, who implanted a "mental virus" in the Sentry's mind. This virus created delusions that if the Sentry used his powers, a devil would appear, intent on destroying the world.
As a subconscious cry for help, Reynolds implanted his memories into the mind of comic book writer Paul Jenkins, who wrote the Sentry's repressed memories into a series of comic books.
Years later, Robert's memories returned, and along with them the Void, who rampaged across Europe, murdering many members of the Super Heroes of Europe (SHE). The Sentry contacted his former colleagues, but the only one who recalled their shared history was the Hulk. As the Void returned to Manhattan, the pieces began to fall in place and the Sentry's former friends assembled to defend him and the city. Remembering the dual nature of Robert's powers, Sentry and Reed Richards reactivated the Watchtower, dispelling the Void and making the world forget the Sentry once again.
New Avengers
Later, however, Robert's memories of the Sentry again returned, and he demanded to be placed on the Raft, S.H.I.E.L.D.'s high-security prison for super-villains, claiming that he had killed his wife. Lawyers Matt Murdock and Foggy Nelson, along with bodyguard Luke Cage and S.H.I.E.L.D. agent Spider-Woman, traveled to the Raft to visit the Sentry in order to find out what had happened to him and his wife. Soon after their arrival the supervillain Electro staged a massive jailbreak, freeing almost ninety supervillains who then attacked Murdock, Nelson, Cage and Drew, along with the newly arrived Captain America and Spider-Man. During the ensuing melee the group was confronted by the alien symbiote, Carnage. Foggy Nelson, thrown into the cell containing Robert Reynolds, attempted to convince the Sentry to help them. Without saying a word, the Sentry blasted through nine levels of the complex carrying Carnage into space, where he ripped the alien symbiote in half.
Inspired by this adventure, the other heroes soon formed the new Avengers, but Sentry vanished before they could invite him to join them. The Sentry stayed in hiding, but remained a person of great interest to S.H.I.E.L.D. and the Avengers, both of whom were fascinated by his powers and worried that they may lead to another Scarlet Witch situation.
Eventually, S.H.I.E.L.D. and the New Avengers confronted the Sentry with several disturbing facts: the wife he claimed to have killed was alive, and the only reference in the world that could be found of the Sentry was in comic books, stories invented and written down by the imagination of a comics writer. Unable to face these shocking events, the Sentry fled. Resurfacing as Robert Reynolds at his home, the Sentry was again confronted by the Avengers and S.H.I.E.L.D., along with the Inhumans and the X-Men. He cried, saying that he had warned them of the Void's coming and that it was now too late. The group was suddenly attacked by the Void. Robert, along with the help of Emma Frost, discovered that the reason no one remembered him was not because of his own attempts to erase the Void, but because of Mastermind's manipulation. With this new-found knowledge, the Void disappeared, and Emma Frost resurrected the Sentry. The New Avengers offered him membership, partly to keep an eye on him and partly because they would need his power, which he accepted. The Sentry's headquarters the Watchtower reappeared on top of Stark Tower, where it supposedly had been originally built.
Later, Yelena Belova attacked the Avengers and absorbed the Sentry's powers. After Belova defeated each of the Avengers, she was defeated by the manifestation of the Void, which enveloped and incapacitated her. The Sentry told Belova that absorbing his powers had exposed her to the Void, but if she answered his questions, he could send the Void away. A.I.M. liquefied Belova before she should divulge any info.
Later still, the Sentry was sent by S.H.I.E.L.D. to subdue a rogue Iron Man. During the course of the battle, Iron Man hacked into CLOC - the Sentry's robot prioritizing and warning system - and fed alerts of multiple false emergencies into the Sentry's head, leaving him incapacitated for a few hours.
Looking for the Truth
Having returned to the world, the Sentry captured the hearts of the public, with newspapers referring to him as "the Golden Guardian", and he saved hundreds of lives on a daily basis; Reynolds' psychological problems, however, had worsened. Unable to reconcile that Robert Reynolds, the Sentry and the Void were the same being, the Sentry contained the Void in a vault in the Watchtower. At C.L.O.C.'s urging, Reynolds' psychiatrist Dr. Cornelius Worth entered the vault and found only a chair and a mirror. When Cornelius confronted Reynolds with this, Reynolds became confused and ran to the fairgrounds where he first gained his powers.
Cornelius followed Reynolds to the fairgrounds where the Sentry and the Void had been fighting. The Void claimed that Reynolds transformed into the Void rather than the Sentry, and that the Sentry was merely a guilt-borne byproduct of that transformation. With only half of Robert Reynolds' memories (the Void possessing the other half), the Sentry was not sure the Void was wrong. The Sentry chased the Void away and then explained to Cornelius why Reynolds had hired him in the first place. Reynolds subconsciously wanted someone to reveal the Void's existence to the world so he would no longer have to hide that aspect of himself. The Sentry told Cornelius how Reynolds really gained his powers as a teenager: by stealing the Professor's Golden Sentry Serum and ingesting it to get high. He also told Cornelius that he knew all along that the Void was never in the Watchtower's vault. He knew that if Reynolds believed that he believed the Void to be in the Watchtower, the Void would be there. This kept the world safe from the Void for as long as the Sentry could keep up the charade.
The Sentry then visited Dr. Strange to determine if he was real or not. Strange tricked the Sentry into traveling to his old Professor's research facility where the two men confined the Sentry in an illusionary realm where he was a mental patient and superheroes didn't exist in an attempt to prevent any further destruction. The Sentry broke free of the illusion and after confronting the Professor who made the original serum, he traveled to Antarctica to confront the Void and discover what memories of Reynolds the Void has in his mind.
The Void claimed that Reynolds had actually ingested a super-saturated, exponentially more potent, version of the Super-Soldier formula that created Captain America. This was considered dangerous by the government because the Sentry's blood could be used to create more of the serum, perhaps enough for the entire world. Several failed attempts were made to kill him. Enraged by this revelation, the Sentry threw the Void into the Sun, telling his enemy that he no longer needed him to balance his own actions of good. The Void promised to return.
Civil War
During the Superhuman Civil War, the Sentry sided with Iron Man's Pro-Registration program. While trying to escape from a battle between the New Avengers, believing that every path he could choose would ultimately lead to the death of people he knew, the Sentry flew to the moon. There he was confronted by the Inhumans; believed a threat, he was ordered to follow them to Black Bolt's presence in the so-called "Blue Area" on the Moon. Then, after a discussion of the Civil War events with the (still unaware) Inhumans, he rekindled his friendship with them and almost resumed his past relationship with Crystal. He was then confronted by Iron Man himself, who finally convinced a still reluctant Sentry to join him, stating that he'll help Captain America, who is opposed to registration, understand that the world is changing. He later accompanied a S.H.I.E.L.D. squad to battle Wolverine and told him that he didn't want to get involved but saw no choice - he claimed that he had to stop the ugly business even if that meant becoming part of it for a while. He then knocked Wolverine unconscious and handed him over to S.H.I.E.L.D. Three days after the climactic battle of the Civil War, the Sentry publicly announced his support of the Registration Act. Additionally, he was recruited by Tony Stark to be part of the Mighty Avengers, the newest incarnation of the Avengers team.
Mighty Avengers
While at first there was some dispute between the Sentry and his wife, Robert joined the team while Tony Stark and Ms. Marvel offered him assistance to battle his mental issues. He was seen as the most powerful member of the team, but, lacking in proper training on how to use his abilities, he (consequently) frequently apologized for his mistakes (such as causing damage to the city building and then again when he was thrown into a blimp). When Iron Man morphed into the new female Ultron, she analyzed the Sentry, stated his high power level and pointed out he was very difficult to terminate. He battled Ultron, with neither one seeming to be able to win, until Sentry had to break off to stop the S.H.I.E.L.D. Helicarrier from crashing into Manhattan.
Ultron then initiated a "Plan B" which involved killing Lindy, the Sentry's wife. An enraged Sentry attacked Ultron once more, but in an exchange of blows was knocked away. His teammates Ares and Hank Pym in his Ant-Man costume proceeded to infest Ultron with a virus intent on destroying it and allowing Iron Man to reform himself. Sentry however, assaulted Ultron in retaliation for murdering his wife and almost compromised the Avengers plan by nearly tearing Ultron's head off. Before he could finish, he was knocked away by Ms. Marvel. After Ultron's defeat he returned to the Watchtower to find his wife, Lindy, alive and well - having apparently revived her himself after touching her. Robert was later shocked when he heard his wife, in a terrified state, secretly requesting that Iron Man find a way to either power him down or kill him before he would one day kill them all.
The next day, a symbiote attack infected everyone in New York, including a few of the Mighty and Secret Avengers, with the exception of Sentry, Wonder Man, Ares, Ms. Marvel, Luke Cage and Iron Man. Sentry eventually had no choice but to knock out Janet, who had grown to giant size and was infected. When Iron Man managed to create an antidote, they track the symbiotes from Latveria, so the Avengers and S.H.I.E.L.D. led an attack against Victor von Doom. Unfortunately, Sentry, Iron Man and Doom accidentally go back in time. To get back, they needed to use the Fantastic Four's time platform. That mostly required Sentry, because whatever he does any-when will be eventually forgotten.
World War Hulk
When the Hulk and his Warbound attacked Earth, Sentry talked to Reed Richards and Tony Stark. Both men were able to convince Robert to fight off the Hulk upon his return to Earth, but not before the Sentry had a talk with Iron Man. Iron Man told Robert that they needed him, that he believed without him they would lose and that despite their fears of what could happen when unleashing the Sentry's powers, Robert had a responsibility to act. A confrontation with the Hulk and Iron Man caused Sentry's Watchtower to drop straight down through Stark Tower, destroying it. Later in a confrontation between the Hulk and the Fantastic Four, Susan Storm tried to call the Sentry for help, but he did not answer the call. The President also attempted to convince the Sentry to fight the Hulk, but failed. The Sentry watched the battle between the Illuminati and a gigantic monster on the news as most of the Hulk's actions, as well as the recent events, were televised. The Illuminati were victorious, but the Hulk modified the obedience disks implanted in them, making them want to kill each other. After seeing this, the Sentry flew out of his home to face the Hulk.
Mister Fantastic was ordered to kill Iron Man, but was stopped by the Hulk declaring that his return was for justice. Sentry arrived and engaged the Hulk in combat. Robert was no longer holding back, having lost control of his powers while going into battle being in a frail mental state. After a while, he began to lose control of them. Sentry unleashed forces that nearly destroyed what was left of New York, but ultimately, the battle between the two titans was ended after they burned each other out at the end of the battle. With the Sentry reverting back to Robert Reynolds and the Hulk back into Bruce Banner.
Secret Invasion
Robert joined his Mighty Avengers teammates as they discovered a Skrull ship that contained past versions of a large group of heroes. The Sentry battled the ship's Vision, who hehe saw morph into the Void and tell him that the invasion was Robert's punishment for those who forgot him.
Scared, Robert flew away to Saturn and struggled with his mentality in its ring. When he returned to Earth however, he was no longer the Sentry, but the Void. The Skrulls had invaded New York City and one of them had broken into his Watchtower, threatening Lindy. Robert made his way back to the Watchtower and fended off the powered Skrulls. Lindy was horrified to learn that whatever Bob couldn't accomplish as the Sentry, he would accomplish as the Void.
Dark Avengers
Osborn visited the Sentry shortly after the Invasion. Osborn confided in Bob his own mental health problems, and convinced him that there was no Void, that he had created it by denying his own humanity. Osborn offered to help Bob, on the condition that he join his Avengers. He gave him a formula similar to the one that gave him his powers.
Upon confronting the sorceress Morgan le Fay, the Sentry, having been given a complete mandate by Osborn, seemingly killed her by tearing her head off. Afterward, in a confused state, he asked whether what he did was good or bad. He then exploded in a blinding flash of light which also heralded the return of Morgana. After Osborn's Avengers and Dr. Doom defeated Morgana, the team, believing the Sentry to be dead, returned to New York City. Upon reaching Avengers Tower, they were met by a flash of light as the Sentry reappeared alive and well, much to the surprise (and worry) of his teammates. Osborn went out to remind Reynolds that there was no Void. Later, he asked the Void to have Robert massacre a cell of Atlantean terrorists who attacked Los Angeles.
During the events of Utopia, Emma Frost reached into the white room she placed in Robert's mind in order to remind him of who he was. She held the Void within her while he fled the battlefield. However, she failed to contain the Void, who chased Robert. Somehow, he managed to escape his dark persona. But when he returned to his Watchtower, he found Lindy holding a ray gun to his face. She had grown terrified of him since his refusal to let her go and shot him.
The Siege of Asgard
Returning to life, under the Void persona, Reynolds prepared to kill Lindy. Robert and the Void battled each other, the former reminding the Void of their deal. Robert fought Void in order to keep him from killing Lindy. In a desperate attempt, Robert flew as fast as he could out of the Watchtower, and into space, heading for the Sun. Robert then tried to kill himself by flying into the sun, but it did not work. The Void guided Robert back to Earth, convincing Robert on the way that everything he did was a failure, and that he should just give the Void control, because everything he did was a success. Robert then let go of his control.
The Void was later seen hovering near Avengers Tower using tendrils to attack the ground. Norman Osborn confronted the Void, who confirmed that he was in control of the Sentry. The Void wanted a world where Bob and Lindy couldn't exist. Osborn promised him that world, and told the Void to follow his orders. The Void complied.
After Ares attacked Norman Osborn, the Sentry engaged the God of War. Following a short skirmish where the Sentry had the upper hand, he ripped Ares in half from head to toe to the shock of everyone on the battlefield. Osborn then sent the Sentry to battle Thor. Sentry gained the advantage in his fight against Thor, until Norman Osborn lost control and begged the Void to bring down Asgard. As he released Thor who watched in terror, the Sentry turned Asgard into rubble. The Void, now in full control, began to attack the remaining heroes, who were eventually greatly empowered through the intervention of Loki using the Norn Stones. After a relentless assault against him, the Void killed Loki to prevent him from further using the stones. In a last ditch effort, Tony Stark directed the Shield Helicarrier to ram the Void like a bullet. The resulting explosion caused the Void to revert to Robert Reynolds. After pleading for his death, Bob turned back into the Void and was swiftly killed by Thor. Thor wrapped the Sentry's charred corpse in his cape, flew him into space, and dropped him into the Sun.[47] In the funeral of the Sentry many heroes exchanged stories about the Sentry. While the ceremony was going on, CLOC went to Reed Richards and made him read page four of Roberts diary. Reed was in shock and CLOC stated that he would rebuild the Watchtower in anticipation for the return of Robert.
Horseman of Death
Sentry was brought back to life by the Apocalypse Twins, using both the Life Seed and Death Seed, in order to serve, alongside Banshee, Grim Reaper and Daken, as one of their Horsemen of Death. Once resurrected, Sentry's madness slowly increased and he started to consider himself as the heir of Apocalypse.
When the Avengers Unity Division arrived in the Apocalypse Ark within the shrunken Akkaba Nebula, Sentry took Thor by surprise and the two of them started to fight in the planet covered by green lava known as Tyconria. After causing devastation around the planet and its inhabitants, Sentry managed to temporarily subdue Thor and went towards the Tachyon Dam of the Twins where he was confronted by Wasp, and later also by a returned Thor.
During the fight Thor, whose consciousness returned from the future where the Apocalypse Twins won, tried to convince Sentry of helping them to save the Earth from destruction as secretly planned by the Twins. Learning this, Sentry, full of madness but still thinking of himself as the protector of mankind, agreed to help stopping Exitar the Executioner but not before deciding that he would be the destruction of these "cancerous" mutants. After Exitar's death, Sentry revealed to Wasp that he enjoyed helping the Avengers and that he would take a great journey moving the Celestial body far from Earth. Before leaving, he warned her that they had to prepare themselves because the Celestials' wrath would be mighty.
Sentry World
The Sentry proceeded to wander among the stars, trying to find a way to die. He was found by Doctor Strange, to whom Rob begged to be killed, but the Sorcerer Supreme didn't know how he could manage to do that. Instead, Strange helped Robert find peace by locking him within his own mindscape, curing him of Apocalypse's influence in the process. Following the loss of the mantle of Sorcerer Supreme to Loki, Strange sought Rob's help and brought him back from the confinements of his own mind in order to help him invade Asgardia to take a portion of the World Tree's mystical power to be used against Loki. At the Kamar-Taj, the Sentry assisted Strange and became subject to a ritual that passed onto him the physical toll that Strange would've taken for every spell cast during his fight against Loki, which had little effect on him due to his superhuman physiology. Robert returned to New York to help the former and current Sorcerers Supreme against the Void, who had been released by Strange to take Loki down. After locking the Void back at the Sanctum Sanctorum, the Sentry confronted Strange for releasing the Void and, disappointed by his actions, Bob warned Stephen to never contact him again.
Using a device called the Confluctor, Bob gained the ability to access the pocket universe Doctor Strange had set up inside his mind. In this "Sentry World," Bob could freely act as the Sentry, without risking the Void manifesting in the real world. By day, he trudged through a mundane life as Bob Reynolds, and each night he used the Confluctor to become the Sentry and fight crime with the Sentry Family: Scout, Sentress and Watchdog. In order to keep the Void at bay, Bob needed to return to Sentry World once every 24 hours. After returning from the Sentry World, Bob discovered that the Confluctor had been stolen, and that someone had entered the Sentry World and killed Scout. Discovering that the real Billy Turner was behind this, wanting to take his place as the Sentry with help from Cranio - an old enemy of the Sentry's - Reynolds snapped, merged with the Void to become a dark version of the Sentry, killed Billy, and then flew off into space after a brief confrontation with the Avengers.
Annihilation - Scourge
Struggling to understand his new state of self, the Sentry returned to Earth to ponder about it. While meditating, he unintentionally started to warp reality around himself, engulfing the entire town of Pawhuska in a field of bad energy that attacked whoever entered it both physically (through monsters) and mentally (through vivid illusions). Said energy was eventually detected by Black Panther and the Agents of Wakanda, who went on to investigate it. With the help of his fellow agents, Fat Cobra was able to purge the evil energy from the Sentry's body and dispose of it. Ashamed by his own actions, the Sentry fled.
Soon after, the Sentry went after Mister Fantastic and begged him to set him free of the Void forever. After extensive tests, Richards discovered there was no way to separate the Sentry from the Void under the laws of their universe, so he sent him to the Negative Zone in the hopes that he would succeed there. Upon soaking up the negative cosmic rays, the Sentry separated from the Void but was left in the powerless form of Bob Reynolds, unable to transform into his superhero alter ego. The Void fled, stranding Bob in the Negative Zone until the Silver Surfer found him weeks later and merged with him in order to defeat the Void, who became the apparent leader of the Cancerverse forces in the meantime and was leading an invasion through the Negative Zone.
After Reed Richards opened a portal to assemble the galaxy's greatest heroes against the Cancerverse, a group of heroes held the Void still so the Silver Surfer could merge Bob Reynolds to him again. They hoped that Bob would call off the invasion once in control, but that wasn't possible as the Void wasn't truly the Cancerverse's leader and it was now hellbent on getting Nova back to the fold. With no other option, Nova attracted the Cancerverse's infection back to the tear it was coming from and swallowed it whole. The merged Sentry then killed Nova, thus ending the scourge and closing the rift. While all the other heroes returned to the Positive Zone, the Sentry remained behind to watch over the universe he almost killed.
King in Black
In light of the impending invasion of Earth by Knull - the primordial god of darkness who had created the symbiotes - the Sentry, restored to his original form, was recalled to Earth by the Avengers, who told Knull that they would watch his demise. Killing one of the symbiote-controlled Celestials, the Sentry grabbed Knull and attempted to fly him into orbit and rip him in half as he once had Carnage. Instead, Knull reversed their positions and ripped the Sentry apart before assimilating the Void into himself.
