Title: MHA: The beginning Of Ben 10.
Logline:
In a world where heroes rise and villains scheme, Ben Tennyson finds himself stranded in the universe of My Hero Academia after an unexpected twist of fate. Displaced from his own reality, he must navigate the intricate web of quirks, society, and heroism—while wrestling with his own identity.
Plot
1) Arrival
After the devastating events of Ben 10: Alien Force and Ultimate Alien, 13-year-old Ben Tennyson is forced to recreate the universe following its destruction by the Annihilargh. Using Alien X, he manages to restore existence—but Serena and Belicus refuse to let him enter the newly crafted reality. In Ben's memories, the universe always included a Ben Tennyson—resulting in an accidental duplication of himself. Unable to integrate, Alien X casts Ben into the world of My Hero Academia. He appears suddenly in the bustling streets of Musutafu, only to be caught in an accident that leaves him unconscious. When he awakens, he finds himself in the care of Yuna, a 24-year-old woman. Meanwhile, Detective Naomasa Tsukauchi begins investigating the mysterious boy, suspecting he may be a vigilante.
2) Vigilante: Part 1
As Ben adjusts to his new reality, he befriends Sai, Yuna's 13-year-old brother. The two quickly form a strong bond, and Sai introduces Ben to the concept of quirks. Fascinated, Ben dives into research about this world's history. During a library visit, a fire breaks out—Ben instinctively activates the Omnitrix and becomes Heatblast to control the flames. However, when a Pro Rescue Hero arrives, he mistakenly believes Heatblast started the fire. Ben is forced to flee before he can explain.
3) Vigilante: Part 2
Multiple vigilante sightings begin to surface across Musutafu, but authorities remain unaware they're all Ben in different alien forms. Six days into his new life, Yuna begins tutoring Ben in Japanese but notices his fatigue. Suspicious, she recalls checking his room one night only to find it empty. Meanwhile, Detective Tsukauchi meets with Toshinori Yagi (All Might) to discuss the strange new vigilantes.
4) Suspicion
Yuna's suspicions are confirmed when she sees a close-up of one vigilante and notices the Omnitrix insignia. That night, she sneaks into Ben's room and finds it empty again. Meanwhile, Big Chill intervenes at a gas plant fire, only to confront a villain named Pyromancer, who has been starting fires to lure out All Might. A fierce battle follows, but Pyromancer escapes. When Ben returns home, he finds Yuna waiting for answers.
5) Where I Come From
Ben finally reveals the truth to Yuna and Sai—about his origins, the Omnitrix, and the universe he came from. While skeptical at first, the siblings piece together recent events and come to believe him. Yuna tries to convince Ben that this world doesn't need just one hero—maybe, for once, he can live like a normal kid.
Meanwhile, Pyromancer's frustration escalates. He's approached by Tomura Shigaraki, who pushes him to intensify his attacks. Pyromancer takes a building hostage, threatening to incinerate it unless All Might appears. Ben prepares to transform, but Yuna stops him, asking him to trust the heroes. Reluctantly, he agrees. One minute later, All Might arrives and ends the standoff. Yuna reassures Ben—it's okay to rest now.
6) Normalcy
Three weeks later, Ben enrolls in middle school alongside Sai, under one rule: no powers, no heroics. Though uneasy, Ben agrees. At school, he befriends Echo, a girl with a sonic scream quirk, and Rei, a quiet, quirkless boy. As Ben witnesses how the quirkless are treated, he begins to understand powerlessness—and chooses, for once to act without any powers.
7) Holidays
Months pass, and Ben slowly adjusts to his new life. As Christmas and New Year's approach, a quiet sadness sets in—his first holiday without family. Noticing his gloom, Yuna and Sai set out to give him a celebration he'll never forget.
8) Toga
Three years later, Yuna has officially adopted Ben. Now 16, he works part-time at a coffee shop, living a peaceful, civilian life. On a supply run, he unexpectedly bumps into Himiko Toga. Something sparks between them. Sai teases Ben for the obvious crush but reminds him Yuna's birthday is coming up. The brothers begin planning.
9) Freedom
Ben starts having strange dreams—an ominous voice, a darker version of himself, Naga Ben, whispers promises of power and freedom. Unnerved, Ben runs into Toga again and, in an awkward moment, offers to buy her a drink. She agrees.
Meanwhile, Detective Tsukauchi reflects on the vanished vigilante, wondering what happened to them.
10) Time of Death
Ben and Sai shop for Yuna's gift. Nervously, Ben plans to ask Toga out. Elsewhere, All For One puts a plan into motion—Gigantomachia attacks the city to draw out All Might. Unaware of the danger, Ben buys a locket for Yuna and runs into Toga, who plays with a stray cat. He asks her out—she says yes.
Suddenly, chaos erupts. Explosions rock the district—Yuna was supposed to be there. Horrified, Ben breaks his promise. He activates the Omnitrix for the first time in years. Racing to the scene as XLR8, switching to Wildmutt and Humungousaur, he searches the wreckage and finds Yuna—barely alive.
Elsewhere, Toga waits at the shop. Ben never arrives. She quietly watches the smoke rising.
11) What Is Justice?
Yuna's death shatters Ben. Though hailed as a hero, authorities still deem his vigilante actions illegal. When they attempt to detain him, he escapes as Big Chill. He finds Sai and delivers the news. Both are devastated.
Sai pleads for justice. Ben demands revenge. They make a pact—hunt Gigantomachia together, but avoid crossing the line.
Tsukauchi analyzes evidence, confirming Ben was the shapeshifting vigilante all along. Three months later, Ben and Sai are the most wanted vigilantes in Japan. At U.A., Nezu suggests Ben as the next One For All successor. Aizawa opposes the idea.
12) The Last Smile
All For One takes an interest in Ben's "quirk," recognizing its potential. He sends Shigaraki to recruit him. Meanwhile, Naga Ben's voice grows louder, whispering darker ideas: peace through total destruction of evil.
Ben begins slipping, nearly killing a villain in a fight. Horrified, Sai leaves him. Isolated, Ben is approached by Shigaraki, who manipulates him with lies about the corrupt hero society. He offers Ben a chance to meet All For One.
All For One offers a deal: join them, and they'll give him Gigantomachia's location. Even Naga Ben urges him to accept.
But Ben refuses. Because no matter how much he's lost—he is still a hero.
All For One, recognizing Ben as an unrelenting threat, orders Shigaraki to kill him. Ben survives by transforming into Swampfire, but soon, five Nomu descend upon him. Outnumbered and exhausted, he fights fiercely until, at the last moment, Sai arrives, tracking him down.
During the brutal battle, Ben is forced into rapid transformations, eventually causing the Omnitrix to time out. A Nomu strikes, aiming to impale him—but Sai jumps in the way, taking the full force of the attack.
Gravely wounded, Sai drags Ben away, leaping out the window to buy time. As they hide, his strength fades. In Ben's arms, Sai breathes his last.
13) The End of Exodus: Part 1
With the Omnitrix recharging, Ben is forced into hiding. In a flashback, it is revealed that he previously hacked the device using Grey Matter, granting himself Master Control.
When the Nomu finds him, Ben fights back, shifting into Heatblast. Fueled by grief and fury, he allows NAGA BEN to guide him, using Heatblast's Supernova ability to burn the Nomu beyond its healing capabilities.
Blinded by rage, he turns to Shigaraki, ready to finish him off—but a portal opens, saving the villain at the last moment.
Enraged beyond reason, Ben is suddenly attacked by Endeavor, who arrives after witnessing the supernova explosion. A brutal fight defeats the pro hero effortlessly using Arcticguana and Big Chill, declaring all heroes his enemies.
All Might arrives, trying to reason with him, but Ben launches an attack. More heroes flood the battlefield, and as news anchors broadcast the battle live, all of Japan watches in horror.
When Aizawa arrives, he sees Sai's lifeless body—and with quiet devastation, tells Ben that this is his fault. Sai died because Ben chose the path of a vigilante.
The words shatter Ben's resolve. His mind breaks. And in that moment, NAGA BEN takes control.
14) The End of Exodus: Part 2
NAGA BEN unveils his true identity: Oblivion Prime. He was never a mere hallucination—he was a force that had infiltrated Ben's mind the moment he left his world, manipulating him ever since.
The heroes fight desperately against Oblivion Prime, but he is overwhelmingly powerful. As he prepares to annihilate the world, salvation arrives—Nezu and Midnight, bringing Yuna.
Yuna is alive. Though gravely injured, confined to a wheelchair, she remains defiant. With quiet strength, she speaks to Ben, reminding him of who he is, who he was always meant to be.
Her words shake him. In a battle for control, Ben forces himself back, Oblivion Prime's grip weakening. At last, Ben reclaims his body.
15) Aftermath
With the battle over, Ben is taken into custody. However, he is granted permission to attend Sai's funeral, mourning his fallen brother.
In a flashback, the hero organization gathers to determine Ben's fate. Nezu convinces them to grant him a second chance, but under strict conditions—he must enroll in U.A., and he must prove himself worthy.
Back in the present, Toshinori and Nezu visit Ben as he lays flowers at Sai's grave. They present him with an offer—if he enters U.A. and excels, his crimes will be forgotten. But they also give him a personal mission: protect Izuku Midoriya until he masters One For All.
Ben agrees.
Returning home, Yuna greets him with a gift—a green jacket, stitched with the number 10. She tells him it is a promise—to never lose himself again, and to always come home.
On the day of the U.A. entrance exam, Ben stands at the gates. His journey toward redemption begins.
As Sakura petals fall softly, across the city, Himiko Toga watch
es footage of his battle, a small smile forming on her lips.
She declare that she'll see Ben soon, before walking away.
SCENES.
Scene: Class 1-A Ability Test
The field was quiet as Swampfire landed his final throw, the numbers barely above average. Not bad. Not great. But enough.
Bakugo clicked his tongue. "That's it?"
Ben didn't respond. He stood at the edge of the group, arms crossed, eyes empty.
"You holding back or just bored?" Bakugo sneered, stepping forward. "We all saw the footage, alien boy. You wiped the floor with All Might like it was nothing. You think you're too good to show us what you can really do?"
Ben's eyes flicked toward him, dull and heavy. "There's no point."
Bakugo scoffed. "Maybe that attitude's why your brother Sai got killed."
The silence was instant and brutal.
Then came the light.
A surge of emerald energy lit the training grounds—and in the blink of an eye, Bakugo was off the ground, feet dangling, throat caught in a crushing grip. Fasttrack's claws glowed faintly as wind rushed past.
"Say his name again," Fasttrack growled, voice low and vibrating with rage. "Say it, and I'll rip your tongue out."
Bakugo's eyes bulged, fingers scrabbling at Fasttrack's arm. He couldn't speak.
"Enough!" Aizawa's voice cut through the tension like a whip as his eyes glowed red with Quirk Erasure.
Nothing happened.
Ben didn't even flinch.
Midoriya stepped in, arms out. "Ben—please. Let him go. It's not worth it."
A long pause. Then Fasttrack's grip loosened, and Bakugo collapsed to the floor, coughing and gasping.
Ben detransformed. "Don't talk about Sai," he muttered, voice barely audible.
Aizawa stepped in front of him, face unreadable. "Pull that again, and I won't hesitate to expel you. I don't care who you are."
Ben didn't reply. He just walked away, hands in his jacket pockets, head low.
And for the first time, Class 1-A realized—Ben wasn't here to make friends. He was here for someone. And everything else
? Was a ticking bomb waiting to go off.
SCENE 2:
Scene 2
The battlefield fell silent for a heartbeat—just long enough for Ben to lock eyes with Shigaraki.
Rage surged like a tidal wave. His vision tunneled, blood roaring in his ears. The image of Sai—his brother—broken and dying in that alley played in his mind again, just as it had a thousand times before.
Ben didn't think. He reacted.
In a flash of red light—ominous and unnatural—the Omnitrix twisted, warping its usual green glow. A roar tore from his throat as Humungousaur emerged, larger and more terrifying than ever. But something was off. The glow in his eyes. The savage way he moved. The red hue of the Omnitrix—it wasn't just a transformation.
It was Oblivion Prime, clawing its way to the surface.
"SHIGARAKI!" Ben bellowed, charging with the force of a freight train.
Class 1-A reacted instantly, trying to intercept him, to stop the rampage. But Humungousaur wasn't holding back. He tossed them aside like ragdolls, every blow brutal but restrained—just enough not to kill.
Midoriya, bleeding and panting, realized what was happening. Ben's going to kill him... And if he does, he'll never come back.
Then he remembered something.
A quiet moment, weeks ago.
"
A quiet moment, weeks ago.
"When I designed my costume," Ben had said, "I didn't want armor. Just this jacket. It's hers. Yuna's. She made me swear... that if I ever lost myself to rage again, I'd remember her, and stop."
Midoriya sprinted through the chaos, ignoring the stabs of pain, diving into the artificial lake. Floating there—half-submerged—was Ben's black and green jacket. He grabbed it and ran back, holding it up high.
"BEN!" he shouted. "She wouldn't want this! You told me this jacket was your promise! To never lose yourself again!"
Humungousaur stopped. His breathing heaved. The red glow flickered.
Ben dropped to his knees, body shrinking back to human form, eyes wet and trembling.
But it was too late.
A portal cracked open behind Shigaraki. The villain smirked, beaten but alive, and vanished into darkness.)
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My own created alien, OC.
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Alien Bio – Oblivion Prime
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Name: Oblivion Prime
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Species: Primval
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Planet of Origin: Kha'ratek, a dead world once located in the Anur Phaetos galaxy
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Aliases:
Naga Ben
The End
The Abyss-Walker
The Forbidden Evolution
Appearance:
Naga Ben – A corrupted and chaotic version of Ben Tennyson. He has long, ghost-white hair, pale skin, and cold, black eyes. His smile never fades—smug and detached, as if he's already seen the future and won. His voice carries a harmonic distortion, layered with echoes of past regrets.
Oblivion Prime – A towering, godlike entity formed of pitch-black, armor-like skin laced with glowing crimson energy veins that pulse like a heartbeat. His face is expressionless, void-like. Multiple alien silhouettes flicker across his body as unstable echoes—remnants of forms he's consumed.
Primval Lore:
The Primvals were the natural opposites of the Celestialsapians. While Celestialsapians represented creation, imagination, and the expansion of life, the Primvals were destruction incarnate, serving as a cosmic reset. They believed the universe grows stagnant without decay.
Since the dawn of existence, they warred with the Celestialsapians in a battle of ideology: Order through Balance vs. Order through Erasure.
Eventually, the Celestialsapians ascended into a new form—the Three-Crowned Celestialsapians—and wiped out the Primvals in one final cataclysm, shattering their homeworld Kha'ratek into cosmic dust.
Entry into the Omnitrix:
Azmuth, creator of the Omnitrix and the smartest being in five galaxies, believed that to truly comprehend creation, one must also understand destruction. Driven by curiosity and caution, he traveled to the last sector of Anur Phaetos and retrieved a surviving strand of Primval DNA from the debris of Kha'ratek.
However, he knew this power was too dangerous for casual use. So, he locked it behind a Code 10 Omega Lock—accessible only under the most extreme conditions.
Ben's First Transformation (Age 10):
During a desperate battle with Vilgax, Ben was overwhelmed. None of his aliens could match Vilgax's new power. The Omnitrix, sensing a threat to its host's life, automatically unlocked Oblivion Prime.
Ben transformed into the entity for the first time. He defeated Vilgax effortlessly—but nearly killed him. When Gwen intervened to calm him, Oblivion Prime turned on her, unleashing an energy pulse that nearly destroyed her.
The Omnitrix timed out just in time.
Horrified, Grandpa Max and Azmuth agreed to place Oblivion Prime under a permanent lock—Code 10: "Never Again." Ben swore never to activate it... but Oblivion Prime remembers.
Unique Traits:
Oblivion Prime has its own personality, completely separate from Ben's.
Unlike Alien X, who is bound by inner debate, Oblivion Prime acts instantly, guided by destruction.
It constantly whispers to Ben, especially in moments of emotional turmoil.
Powers and Abilities:
AbilityDescription
Super Strength :Capable of lifting three To'kustars (Way Big's species) simultaneously with ease. Can punch through neutronium alloy.
Damage Absorption :Every time Oblivion Prime takes damage, he absorbs the energy and converts it into power. Prolonged combat only strengthens him.
Teleportation :Can instantly relocate within short to mid-range distances through spatial folds, leaving behind black static and a burst of entropy energy.
Cosmic Destruction Beams :Fires beams of compressed decay energy that erase matter on a subatomic level—unlike Alien X, these are purely destructive.
Void Immunity :Immune to time manipulation, telepathy, and standard energy attacks. Existing slightly outside of time makes him impossible to trap or paralyze.
Celestial Negation Field : Within a certain radius, Oblivion Prime can disrupt the powers of higher-dimensional beings—including Celestialsapian logic constructs—though temporarily.
Rage Beacon :His very presence causes nearby beings to feel rage and despair. Weaker minds may hallucinate or turn on allies.
Omega Durability : Virtually indestructible by known galactic weapons. Only Celestialsapians or dimensional erasure could potentially destroy him.
Weaknesses:
No Creation Power: Unlike Alien X, Oblivion Prime cannot create or heal—his purpose is pure erasure. He cannot fix what he destroys.
Emotional Anchor: Ben's love for his friends and his self-worth are his only shields. If Ben regains clarity or peace, Oblivion Prime begins to unravel.
Time Limit: If used too long, Oblivion Prime can start to override Ben's consciousness permanently.
Notable Quotes:
"The stars envy your fragility, Ben. Let me take that weakness from you."
"Why save the world… when you can end its suffering?"
"I am not Alien X. I do not wait. I end."
"Let me show you the mercy of silence."