1 - 20 of 155 Works in Physically De-Aged Tony Stark
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A League of Their Own by xlenaleex (Turk_and_JD)
Fandoms: The Avengers (Marvel Movies), Marvel Cinematic Universe, Marvel
20 Sep 2025
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After the Avengers crash and burn Tony picks himself back up. With the help and support of those around him, they forge a brighter future together. This is what it means to fight together. This is what it means to be friends. This is what it means to be family.
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Conviction by SailorChibi
Fandoms: The Avengers (Marvel Movies), Marvel Cinematic Universe
19 Sep 2025
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Omega Tony Stark is kidnapped and then forcibly de-aged by Hydra, all with the intention of forcing Tony to breed new scientists. Beta Peter Parker goes into an Alpha Rage during the rescue and finds out that the spider bite that gave him his powers also left him with a now-activated latent alpha chromosome.
Tony has never trusted alphas... ANY alpha. But maybe, just maybe, he could trust Peter.
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Messes are there to be made by Schafskaelte
Fandoms: Marvel Cinematic Universe, Captain America - All Media Types
19 Sep 2025
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De-aged Tony Stark lives with the Avengers.
Captain America has always been his favourite superhero, but because of Howard, little Tony is really afraid of making the Captain angry or just not being good enough in general.When he breaks something on accident, it would go over as well as you'd expect.
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During the snap, Tony has a fleeting thought that he wishes he hadn't wasted so much of his life. This would later be regarded as a terrible mistake.
Or MIT era Tony is sent to the future and has to learn to adjust to the new world around him. Thankfully he isn’t the first to do this. With the help of his childhood hero, Steve Rogers, he might just be okay. It takes a road trip and a few revelations but maybe Tony can learn to live with who he was and will never be.
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A magical mishap in the lab leaves Tony Stark physically five years old—and mentally stuck there too. He remembers nothing past his early childhood. No Iron Man. No Avengers. Just the pressure of being Howard Stark’s son… and the stories his father told about Captain America.
Terrified of being in trouble and convinced his father will be furious, little Tony runs from the Tower. But instead of hiding, he seeks out the one person he remembers as a hero: Steve Rogers.
When Steve finds him, Tony isn’t scared—he’s starstruck. Captain America is real. And maybe, just maybe, he’ll protect him from the impossible expectations he’s been carrying since before he could tie his shoes.
Now the Avengers must face a new challenge: caring for a child genius who’s terrified of failure, desperate for approval, and still glowing with the arc reactor in his chest.
And Steve? He’s realizing that the bravest thing Tony Stark ever did… was survive being a kid.
Series
- Part 2 of The Avengers De Aged
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From Darkness, Lies The Power To Create by Harley_Heart
Fandoms: Marvel, Marvel Cinematic Universe
26 Apr 2025
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It had been 2 years since Tony had come home from being a prisoner of War in Afghanistan. 2 years since the world thought Tony Stark was Ironman, and expected to hear, "I am Ironman." however Tony declared that Ironman was his body guard. 2 years since Tiberius Stone stepped up as Ironman. 2 years since the identity of Ironman was declared a secret. Since his debut of the new and improved Stark Industries, Tony and Tiberius have been on the search for all of Tony's missing weapons, with the help of SHEILD. Tony, however, is a very impatient man. Impatient, and not very trusting to SHEILD. They are full of secrets, even their secrets have secrets. So, the only logical thing for Tony to do, was search for his weapons behind SHEILD's back. What do they end up finding instead? Will they be able to keep Ironman's identity from the world?
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someone is screwing with tony by daemon_kitsune
Fandoms: Iron Man (Movies), Batman - All Media Types
04 Apr 2025
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Tony has had a lot of shit things happen in his life, but this is truly a first.
First, what the hell is a 'Gotham'?
Second, why doesn't he exist anymore?
Third, why is the technology so bad?
Oh, and fourth, why exactly is he a teenager again?
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The Spider and His Little Heroes by ChroniclesofNarnia
Fandoms: Spider-Man - All Media Types, Batman - All Media Types, DCU, The Avengers (Marvel Movies)
28 Dec 2024
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After years of loss and turmoil, Peter Parker decides to leave behind his life as Spider-Man to focus on himself, pursue a psychology degree, and find solace in creating music that helps others. However, his peace is shattered when Nick Fury visits, trying to recruit him back as a hero. Peter refuses, wanting no part of the hero’s burden anymore. But before he can process this, an assassin attacks, and Peter is caught in a deadly encounter.
Peter wakes up in an unfamiliar world—Gotham City, where he finds himself the guardian of a younger, de-aged Avengers team. These heroes, including Thor, Loki, Tony Stark, Steve Rogers, Wanda, Pietro, Sam, Clint, Bucky, Bruce, T’Challa, Stephen, and Natasha, have retained their memories but are now children with their powers and intellects intact. They are all under his care, each one grappling with the trauma of their previous lives and the uncertainty of this new existence.
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Peter has a lot in common with his client, tonight.
Originally posted in 2021 under a different title and username.
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Tony gets turned into a toddler through experimental tech and magic.(after this never trusted magic ever )
Now the avengers has to to take care of him, with tony being in between headspaces one of a man whos reaching his 50s and one of a 4 year old.
Will it be an exhausting journey or will they become closer than ever?
(This is my first story and I'm sorry if there are any grammatical and spelling errors.)
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Tony acababa de perder a sus padres cuando descubre que tiene una alma gemela.
Tony sabe que es un bebé.
E igual no dudó en aparecerse en su puerta y tocar.
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The Quirkless Avenger (MCUxMHA) (FR) by harrylm03
Fandoms: 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia, Marvel Cinematic Universe, Iron Man (Movies)
22 Aug 2024
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ATTENTION SPOILERS AVENGERS ENDGAME SI TU LA PAS VU PART LE VOIR TOUT SUITE
Tony Stark fait le sacrifice ultime en donnant sa vie pour sauve tout l'univers, il quitte ses amis et son monde en héros.
En revenant a lui, il se retrouve dans un corps plus jeune et dans un monde ou 80% de la population mondial possède des super pouvoirs appelle "alter"La majorité des personnages ne m'appartient pas ils appartient a MHA ou a le MCU
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Loki needs help to defeat Thanos, luckily an old married couple also in desperate need of help is more than willing to help him in return.
Series
- Part 12 of Steve's Loss
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Agent Tony Stark by blue_1999
Fandoms: The Avengers (Marvel) - All Media Types, Criminal Minds (US TV)
30 Jul 2024
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When Tony graduated from MIT his parents died in a car accident. Tony is the only one that thinks it could have been sabotage. He decides to join the Behavioral Analysis Unit at the FBI in hopes of catching his parents killer.
Hello everyone! This is my first fanfic so constructive criticism is welcome. This is going to follow the cases in the show starting from season 1. I’ll say what episode it is in the notes. Iron man and the MCU is still going to happen Tony is just going to younger.
Series
- Part 1 of Agent Tony Stark
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Hi, Sweetheart by papermacherainbow
Fandoms: Marvel Cinematic Universe, Iron Man (Movies), Spider-Man (Tom Holland Movies)
26 May 2024
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Color would've been best. Black would've been acceptable. White he could've lived with.
But not gray. Anything but gray.
When Peter gets a gray soulmark on his eighteenth birthday, one that he's seen a million times on the wrist of the man he loved, his whole world shatters. The weight of Tony's death already a heavy burden to bear, he's not entirely sure how he'll make it through the rest of his life without him. As the years go by, he tries to heal, but between the mark on his wrist and the echos of a video message he can't even finish in his mind, it seems like he'll never truly recover. But four years after Tony's death he makes a discovery that might just give him a chance.
The chance to change his soulmark from haunting gray to beautiful color.
This fic is finished and will be posted daily until complete <3
Series
- Part 3 of PMR's AUpril 2024
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Tony Stark Angst by Fourcatsinatrenchcoat
Fandoms: Marvel Cinematic Universe, The Avengers (Marvel Movies), Iron Man (Movies)
24 Mar 2024
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This is a collection of pretty much exclusively Tony Stark angst and hurt/comfort. They'll all likely be some kind of AU as well. The first chapter is a chapter index with summaries. Please comment prompts!
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Let Death remake you by Raven_Lycan0410
Fandoms: Marvel Cinematic Universe, The Avengers (Marvel Movies), Captain America (Movies), Iron Man (Movies)
25 Feb 2024
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“I like to collect pretty, broken things and remake them. Turn back the clock to when they were strong, powerful things and unleash their rage on the world. My favourites have always been the ones who give me death.”
After Siberia Tony Stark is comatose, his body broken beyond anything human medicine can fix. That’s when a creature appears ready to heal and guide Tony back to the man he was before Siberia. Before Ultron, before the Avengers and the guilt and self-hate. When he was the Merchant.
And Death will always love their Merchant.Series
- Part 1 of 'Let Death...'
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День рождения и прочие неприятности by escuadrilla, WTF Tony Stark 2024 (Team_Tony_Stark)
Fandoms: Marvel Cinematic Universe, Iron Man (Movies), Doctor Strange (Movies)
22 Jan 2024
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Тони превращается в шестилетнего ребёнка. Стивен приходит в ужас.
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when you are young they assume you know nothing by RedHoodie1723
Fandoms: Marvel Cinematic Universe, Spider-Man (Tom Holland Movies), Iron Man (Movies), Marvel
31 Dec 2023
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"Yeah, we're all aware of how weird this is, kid," Mr. Stark said, leaning back against his desk.
"Can you still call me kid if you're 17 now?" Peter asked with a grin. Mr. Stark gave him a pointed look.
"First of all, you're 15-"
"-and 7 months."
"-which means I'm still physically 2 years older than you," Mr. Stark carried on as if Peter never interrupted. "And second of all, I'm still mentally myself. All 46 years of me." He tapped his temple.
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Or, after a run-in with an angry sorcerer, Tony is stuck in the body of his 17-year-old self. Until they can find the sorcerer again, he is shipped off to live with the Parkers for his own safety, much to everyone's chagrin. Over the course of his time as a newly minted teenager, Tony must suffer through high school, field trips, parties, and his actually-a-teenager protégé, who is acting stranger than ever.
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While fighting the villain of the week Tony is hit with some spell that de-aged him. Some surprising things come to light involving Loki and Tony's relationship.