Unit Zero: a marvel universe story

Enhanced teenagers weren't supposed to exist outside SHIELD's control.
After the Sokovia Accords, every powered individual became a name on a list - except Alex "Lexi" Blake. Sixteen, stubborn, sharper than she looked, and one of the few who slipped through the cracks.
But the world didn't have room for cracks anymore.
When SHIELD finally caught her, Lexi wasn't given a trial or a choice.
She was given a number.
A room.
A surveillance unit with guards who never blinked.
Tony Stark called it containment.
Everyone else called it Unit Zero.
Lexi called it a prison.
And prisons are meant to be escaped.
Lexi Blake grew up learning that danger came long before fists or shouting - it came in the quiet moments, the ones that made her spine tingle and her pulse spike.
She thought it was anxiety.
Later, she learned it was something else entirely.
Enhanced reflexes.
Enhanced instincts.
Enhanced problems.
After the Accords, the world wanted people like her locked up, trained, filed neatly into categories. SHIELD wanted control. Tony Stark wanted compliance. Her father wanted her out of his way.
Lexi?
She wanted out.
Age: 16
Status: Unregistered Enhanced
Abilities: Heightened danger perception, advanced agility/strength, accelerated healing
Risk Level: Elevated
Disposition: Defiant. Resistant to authority. High escape probability.
Recommended Action: Immediate containment in Enhanced Observation Unit ("Unit Zero").
Handler: Tony Stark
Medical Lead: Dr. Mara Ortiz
Notes: No reliable guardian. Home environment unstable. Subject displays signs of psychological strain and distrust of adult authority.
End of file.
But files didn't capture her fists, her fire, or her refusal to be owned.
And Lexi Blake was not going to stay in that box for long.