Name:
Izuku Shigaraki Midoriya (formerly Izuku Midoriya)
Alias: Oblivion, The Black Flame, or simply Deku to those who fear him.
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Backstory:
Born the biological son of All for One (AFO) and Inko Midoriya, Izuku's life was never meant to be ordinary. AFO had genuinely fallen in love with Inko years before his fatal battle with All Might, hiding his true identity to live peacefully. When he was nearly destroyed in his fight with Toshinori (All Might), he vanished to survive and recover, unable to contact Inko again. She, believing she was abandoned, spiraled into resentment, eventually remarrying Toshinori Yagi, who took her in as a gesture of guilt… and later regret.
But Toshinori was never a father to Izuku.
He was a legend forced to "raise the child of his nemesis."
The Household:
All Might (Stepfather): Emotionally distant, deeply ashamed of Izuku's presence. Publicly played the part of father, but in private, he beat the "villain" out of the boy.
Inko (Mother): Cold and emotionally abusive. She feared Izuku reminded her too much of her past and her lost love.
Himari Yagi (Sister): All Might's biological daughter. Popular, adored, and always told she was the "true heir" to All Might's legacy. She mocked Izuku constantly.
Izuku, meanwhile, had no Quirk—at least, not at first.
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Quirk: Blacklight Virus (Mutation-Type)
A dormant mutation inherited from AFO, Blacklight Virus is a biological horror given form—a mixture of flesh, data, and rage. It manifested violently at age 8, reshaping his entire physiology.
Powers:
Shapeshifting Biomass: Deku can manipulate his own flesh into tendrils, claws, blades, wings, and armor.
Consumption: He can consume enemies to gain their memories, skills, and raw biomass.
Viral Spread: Every strike can infect victims, turning them into mindless, mutated beings or loyal sentient "Broodspawn."
Regeneration: Decapitation and dismemberment mean nothing. He can regenerate from a drop of blood.
Hive Link: He mentally commands all those he infects, forming an evolving network of consciousness.
> His emotions directly affect the virus—rage makes it spread like fire, sorrow mutates it into grotesque beauty, calm compresses it into precision weapons.
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Appearance:
Height: 7'6"
Build: Lean and muscular, with a bio-organic edge—veins of dark crimson glow beneath his pale skin.
Eyes: Pitch black sclera with crimson irises, glowing when enraged or in combat.
Hair: Long, wild, and black with streaks of red, often braided back with living strands of his virus forming crude "crow feathers."
Skin and Tattoos:
His body is adorned with tribal tattoos—etched by the virus itself. They move and shift like molten ink.
Designs: Sharp, swirling spikes spiraling from his spine to his chest, arms, and neck. A massive red virus sigil pulses over his heart.
Glow: Blood-red when he's using his power—dim when calm, blinding in battle.
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Outfit:
Trench Coat: Jet black, heavy leather-like material reinforced with virus-hardened organic fibers. Crimson inner lining. Sleeves torn, shoulders spiked with bone armor.
Pants/Boots: Black tactical pants with red biomechanical tubing wrapping his legs. Steel-toed boots partially fused with his legs—brutal and sharp.
Lower Face Mask: A demonic skeletal mask, black with crimson bone ridges, covering from nose to chin. Carved fangs, glowing eyesockets, tribal markings. It distorts his voice into a deep, distorted growl.
> Color Scheme: Black and red—living shadows and blood. His presence alone makes the air hum with fear.
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Ideals and Goal:
"I do not want to destroy the world. I want to erase everything that allowed people like them to exist."
Deku is neither hero nor villain. He doesn't care about societal labels. He wants one thing:
> A Nation Where the Broken Can Thrive.
A place for outcasts. For the quirkless. The cursed. The abandoned. The monstrous. He calls it "Nexus." A massive floating biomechanical continent, grown from the virus itself, orbiting Earth.
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Nexus – The Viral Continent:
Location: Hidden in the skies, cloaked by viral clouds.
Structure: Grown from Blacklight biomass—living, adapting, self-healing.
Inhabitants: Quirkless, mutants, rogue vigilantes, and virus-bound citizens. All linked to Deku by the Hivemind, all free to express themselves.
Each citizen is willingly infected, granted enhancements without losing their minds.
He gives them power, purpose, and protection.
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How Everyone Reacts:
All Might:
Haunted and guilt-ridden. Knows he made a mistake but is too ashamed to admit it. He tries to reach out once—Deku tells him:
"You raised a monster, Toshinori. Now deal with what you've made."
Inko Midoriya:
Initially in denial. When she finally realizes who Deku became, she breaks down—"You could have been a hero..."
He whispers, "You could've been a mother."
Himari Yagi:
Terrified. Her powers fail to match his. Deku never raises a hand to her—but every time she sees him, the virus in her blood (inherited from shared DNA) makes her scream.
Heroes (Endeavor, Hawks, etc.):
Split. Some see Deku as a threat on the level of AFO. Others see Nexus as a miracle. A place where society's rejects are safe. A few rogue heroes defect.
League of Villains:
Most respect him. Tomura Shigaraki has conflicting feelings, seeing Deku as a brother, rival, and heir.
Deku responds with neutrality: "We walk different paths. I don't want to rule the world. Just remove its cancer."
AFO (His Father):
Amazed. Proud. Heartbroken. He reveals the truth to Deku and offers to rule beside him.
Deku embraces him—and then infects him.
> "You left her. And me. This is all you deserve."
AFO becomes part of the Hive, his mind preserved… but caged. Forever watching his son surpass him.
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Deku's Voice & Demeanor:
Emotionless and deep, with a mechanical undertone when masked.
Speaks softly, almost gently, but every word cuts like a blade.
He rarely yells—he doesn't need to.