Consistency comes from controlling the character definition, reference material, and the number of variables changed in each generation.
1. Create a character specification
Write down age range, face shape, hair, clothing, proportions, color palette, and distinctive details. Keep the description stable.
2. Build a clean reference sheet
Generate neutral front, side, and three-quarter views with simple lighting and background. Select the clearest image as the main reference.
3. Lock the visual language
Reuse the same style direction, aspect-ratio family, and reference settings. Save every parameter that affects the result.
4. Change one variable at a time
Test pose, expression, setting, or camera angle separately. Large prompt changes make it difficult to identify why the identity drifted.
5. Build a continuity checklist
Compare face, hairline, costume details, body proportions, palette, and age before accepting each image into the series.
The takeaway
Treat character generation like a small design system: define, reference, test, and document.