DNA-lock is OnZero's answer to drift. Instead of describing a person in words every time, you define the person once and OnZero holds onto that identity. Every generation then reuses it rather than inventing a new face.

Identity, not description

When you create a character in OnZero, its face and voice are locked into a fixed identity stored as the character DNA. Every image and video generated from that character reuses the exact same locked attributes, so the person you built is the person who shows up - every single time. The prompt now controls the scene, while the DNA controls the identity.

The loop, end to end

1. 1You define the character once from a reference and lock its attributes.
2. 2OnZero stores that identity as the character DNA.
3. 3You write a prompt for the scene and attach the character.
4. 4Every future generation pulls the face and voice from the same locked DNA.
5. 5The result is the same face and voice, scene after scene.

This is the shift that makes serialized, brand-grade content possible with AI. Once the identity is fixed, you stop fighting to recover a face and start focusing on story, scenes and delivery. The next lesson puts that to work across a whole set of scenes.