Izuku Midoriya: The Robotic Hero

From the moment he turned four, Izuku Midoriya's body began to change.
What doctors first thought was a mutation soon turned into something beyond science - his skin hardened into metallic fibers, his bones strengthened into an alloy that could bend and flex, and circuits of light began to pulse beneath his flesh like veins of power.

His Quirk, officially classified as "Bio-Mechanical Evolution," allows his body to evolve, adapt, and build technology from his own cells. Every cell in his body can fabricate mechanical parts - armor, weapons, drones, or even energy reactors - all extensions of himself. He doesn't just wear armor... he becomes it.

At first, his transformation frightened people. His classmates called him a machine, his teachers called him unstable. But when a doctor revealed that his body was still fully human- only adapting to survive and grow stronger- Izuku made a promise:

"If my body was made to evolve, then I'll evolve to protect everyone."

Over time, his evolution advanced. His muscles became denser, his reflexes faster than any human's, and his mind capable of analyzing any technology or quirk he encountered. By studying and recording other quirks, Izuku could replicate their core functions through engineered bio-circuits, turning them into new weapons or tools integrated into his body.
He became a one-man arsenal - a living forge of evolution.