1 - 20 of 29 Works in Robert "Bob" Reynolds as The Sentry (Marvel)
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Estelle Voss is the Thunderbolts’ operations assistant; the one who keeps the chaos barely contained and the missions running on time. She handles egos, explosives, and endless debriefs with the same precision she uses to sharpen her pen. The only variable she can’t manage is Bob Reynolds. Too powerful, too unpredictable, and far too aware of how much he gets under her skin. She doesn’t trust him, doesn’t like him, and definitely doesn’t plan on letting him see how often he’s in her thoughts.
- Language:
- English
- Words:
- 1,097
- Chapters:
- 1/?
- Kudos:
- 5
- Hits:
- 27
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Two Pieces of a Broken Heart by TheGirlintheRestaurant
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe
04 Oct 2025
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On a mission that goes nothing like planned, Yelena crosses paths with a mysterious, amnesiac man who reminds her of herself only a few years ago. An immediate bond forms between them—but when the truth about his past comes to light, they’re forced to fight for his freedom and uncover the ones behind the inhuman experiment he was subjected to.
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Golden Hour by Shelios28
Fandoms: Marvel Cinematic Universe, Thunderbolts (Movie 2025), Captain America (Anthony Mackie Movies)
28 Sep 2025
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Joaquin has a mental breakdown about his recovery. Bob helps him forget.
Series
- Part 2 of The Falcon Down Series
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Main tag is SentryLight and then you leave a kudo (signed, Yearlena Belover) by Dolores_hazell7
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe
28 Sep 2025
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Yelena writes fanfic about her and the Sentry, her mysterious superheroic teammate .
Yeah, that's it.
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So Violently Do I Know Of The World by Pinkfrostdiamond
Fandoms: Marvel Cinematic Universe, Thunderbolts (Movie 2025)
22 Sep 2025
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"When you are not fed love on a silver spoon you learn to lick it off knives." -Lauren Eden
OR the fic where Bob meets someone who cares about him long before he ever had powers and becomes emotionally dependent on their memory. When he meets them in the future, (now with the edition of the Void), it becomes a full blown obsession. He struggles with controlling his impulses while Omen does their best to help heal all the hurt that has been done. (Obsidian black romance but its consensual).
OR the continuation of The Omenverse
Series
- Part 2 of Omenverse fix-it
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Half Doomed And Semi Sweet by noodlerdoodler
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe
15 Sep 2025
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“What happened to your suitcase?” John asked, accusingly.
Confused, Bob blinked at him. He hadn’t expected the man to address him unless it was absolutely necessary, but there was nobody else in the room he could be speaking to. Also, he didn’t understand the question.
“What suitcase?” He said, following up immediately in case he sounded like an idiot: “I didn’t bring a suitcase.”
John stared at him as if he had announced he had flown here directly from Mars.
“This is a six-week programme.” He said, slowly, in case Bob didn’t understand, “There’s no way you managed to fit six weeks’ worth of clothes into that thing.”
Bob shrugged.
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Echoes of the Void by TheIronyMan
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe
13 Sep 2025
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Bob struggles with the blackouts that leave him disoriented, haunted by nightmares, and unsure of where he’ll wake up next. After finding himself in Walker’s room without remembering how he got there, Bob is forced to confront not only the gaps in his memory but also the unsettling closeness of his teammate. As training with Walker blurs the line between discipline and something far more personal, Bob begins to question whether his shadows belong to himself… or to the Sentry.
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in the middle of a labyrinth by jaydeebabes
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe
11 Sep 2025
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“You planning to kill me, Bob?” He asked, almost incredulously.
“Bob,” Sentry repeated the name like it was a foreign word, tilting his head. For a moment, something almost human flickered across his expression, then it was gone.
“I don’t plan to kill you,” he said slowly. “Plans imply doubt. If I wanted you dead, you wouldn’t be speaking.” Bob almost laughed. They stared at each other, soldier and god, both too stubborn to look away. Sentry crouched slightly so they were eye-level.
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Second Chance, First Choice by Anonymous
Fandoms: The Falcon and the Winter Soldier (TV)
06 Sep 2025
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Part 1 — Second Chance, First Choice
A glitch in time punts John back to the morning before the serum. This time he saves Lemar, learns that “boring is merciful,” and quietly hands the shield to Sam—claiming U.S.Agent and a kinder way to be a hero.Part 2 — The Safety Net Clause
Thunderbolts, but with guardrails. John joins on his terms—nonlethal-first rules, lanes for civilians, Sentry kept steady—and outsmarts Val while running city-scale saves. By the end, the world hears it: “Captain America stands with U.S.Agent.”Series
- Part 3 of John Walker-Centric Fics 2025
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Properly, next time (together) by TheThunderBolter
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe, Marvel
23 Aug 2025
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The Sentry is a bit obsessed with Walker.
Walker learns new things about himself, too.Series
- Part 2 of Thunderbolts*: 808
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Bob is performs his rock songs under the alias Sentry.
Joaquin is a huge fan of Sentry.
When Bob and Joaquin meet they instantly click.
Whenever he ask Bob about what be does for a living he dodges the question.
Joaquin secures tickets to see Sentry. Seeing him up close, he kinda looks like his boyfriend. -
Sentry's True Debut/John Walker's Unsaid Pain by bigogetabaddie
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe
13 Aug 2025
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Bob and John try and do something about their repeated benching, and John tries deflecting against the growing void inside of him.
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give yourself a reason by xanadotjpg
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe
04 Aug 2025
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“Maybe,” he thought. “Maybe I could just try on the suit. I’ve made progress, right? That’s what everyone keeps saying. I can control it. For real, this time. I could be the Sentry. Even if it’s just for a few minutes.”
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The Sentry and The Spark [On Hold] by blakecarver
Fandoms: Fantastic Four, Thunderbolts (Movie 2025), The Fantastic Four: First Steps (Movie 2025)
24 Jul 2025
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After a terrifying intrusion shatters the illusion of safety in their home, the Fantastic Four flee their Earth, finding sanctuary on a new one. Now, in an unfamiliar place, a deep homesickness settles in Johnny Storm's gut, a constant ache that matches the emptiness he feels from a lack of connection outside his immediate family. His sister Sue has her own family with Reed and Franklin, leaving Johnny feeling profoundly alone, yearning for companionship of his own. Meanwhile, a deeply troubled Bob Reynolds grapples in solitude with the ever-present shadow of the Void. But when a mysterious flash of fire leaves its mark on Bob's world, a flicker of wonder ignites within him, drawing him toward an unexpected presence.
*Read Chapter Notes*
Series
- Part 1 of Echoes of the Cosmos
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safety off by MissMarvellite
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe
24 Jul 2025
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There was a time where Yelena Belova was nothing but a weapon, created to only know and cause pain. There was also a time when she couldn't fathom the reason her sister did what she did—why she sacrificed herself to save the world. But, after becoming an Avenger, and after she realized her true feelings for Robert Reynolds, she began to understand why.
Set during Avengers: Doomsday(ish) and explores Yelena's connection with Bob and how that would affect his powers as the Sentry.
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Point of Impact by EntropicEnigma
Fandoms: Marvel Cinematic Universe, Thunderbolts (Movie 2025)
23 Jul 2025
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“Okay Bob – Sentry. You’re really starting to piss me off. I am going to give you that one because you just saved me two bottles of ibuprofen, but just so you know that was a dick move.” Mind racing, she turned to leave. “Go take a walk or something. I will send Bucky in to bore you with politics, and then maybe you can sleep – “
She rammed into a solid wall and staggered back, rubbing her head. “Ow! What was that for?”
He met her gaze levelly, fidgeting with his cuffs. “You can rest once you’ve stopped moving like you expect mercy from gravity.”
~*~
Yelena is injured on a mission. The Sentry is less than thrilled. (And then they spar about it)
Can be interpreted as platonic or very slow burn. Part 2 of Silhouettes, but can be read as standalone.
Update: now with more resolutionSeries
- Part 2 of Silhouettes
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Wrong Spidey by Shelios28
Fandoms: Marvel Cinematic Universe, Thunderbolts (Movie 2025), Captain America (Anthony Mackie Movies), Spider-Man (Tom Holland Movies), The Fantastic Four: First Steps (2025)
14 Jul 2025
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“Hello? Is someone there?” asks Joaquin.
Nothing.
He turns back and walks back to his coffees when someone shouts behind him: “Hey, Parker!”
Joaquin looks back, sees a guy pointing a weird looking gun at him, and instinctively gets down, his arm protecting his face. But he's hit by a blast of energy instead of a bullet. It makes him crash against the wall next to him, his left side taking most of the hit.
OR
When enemies of Spider-Man make a mistake and kidnap Joaquin Torres instead of Peter.
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He looked around Walker's childhood bedroom, taking in the shelves lined with sports trophies and the walls covered in posters of football players and rock stars. It was clear his parents had given him full control of the space. It was so different from Bob's attic bedroom. It had never truly belonged to him.
Series
- Part 10 of Bob and the Lovable Asshole
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The Thunderbolts never reached Bob, and he stepped into the role of the Sentry hard. Yelena is determined to bring him back.
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Amber Is The Color Of Your Energy (I See It In Your Eyes) by LusciousDean
Fandoms: Thunderbolts (Movie 2025), Marvel Cinematic Universe, Marvel
03 Jul 2025
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John was always willing to spar with a teammate. He’d usually get his ass kicked. He pretended that the very assertion of that fact didn’t bruise his ego indefinitely, but it was the truth. That’s why he was eager to spar with Bob when he’d finally suggested it. He was sure he’d have no problem beating him.
John was always wrong about things, too.