Model Description: V67 Heterochromia – Two Colors, One Story

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R+ images will be hidden from the gallery. - LoRA model trained with Z Image Turbo

Trigger Words: heterochromia, different colored eyes, two eye colors, mismatched irises, left eye right eye different, dual eye colors, iris heterochromia, contrasting eyes, odd eyes, bicolor eyes

Overview

Premise: If you decide to use my model and your image is chosen for the cover of CIVITAI, I will give you 500 Yellow Buzz, even if the image combines multiple models.
R+ images will be hidden from the gallery. – LoRA model trained for Z-Image Turbo

V67 Heterochromia is a specialized LoRA for Z-Image Turbo, designed to generate stunning portraits where the eyes are the focal point – across women, men, animals, and aliens. It excels at producing realistic, artistic, and fantastical heterochromia (complete, sectoral, or central) with precise color separation, natural iris textures, and cohesive lighting.

Whether you need human character art, animal close‑ups, sci‑fi aliens with striking mismatched eyes, or simply want to give any subject a unique and captivating trait, this LoRA delivers consistent, high‑quality results with perfect color balance and anatomical plausibility across all four categories.

Character Features (Simplified)

CategoryKey TraitsWomenComplete, sectoral, or central heterochromia; natural or fantasy colors; works with any ethnicity, hair color, and style (portrait, beauty, editorial)MenSame realistic or stylized heterochromia; rugged, refined, or fantasy looks; strong gaze and masculine features preservedAnimalsMammals (cats, dogs, wolves, horses) with natural heterochromia (amber+blue, green+yellow); fur texture, realistic eyes, species‑accurate anatomyAliensUnnatural color pairs (violet+gold, crimson+cyan); slit pupils, glowing effects, bioluminescent sclera; sci‑fi or fantasy alien designs

All subjects maintain:

Realistic iris texture – fine details, limbal ring, light refraction
Balanced lighting – colors react naturally to environment
Expressive gaze – emotions and personality enhanced by the unique eye contrast

Style & Aesthetic

This LoRA captures:

Anatomical accuracy – Eyes are rendered with proper sclera, cornea reflections, and skin/fur integration.
Versatile genres – From subtle real‑life portraits to bold fantasy, cyberpunk, sci‑fi, and animal photography.
Lighting awareness – Each eye color reacts independently to light sources, adding depth and realism.
Cross‑category consistency – Works seamlessly for human, animal, and alien subjects without losing identity.

Sample Prompts (Tested)

👩 Women – Natural & Fantasy

Natural Close‑up
<lora:V67_Heterochromia:0.8> close-up portrait of a young woman with complete heterochromia, left eye deep sapphire blue, right eye vibrant emerald green, soft golden hour light, freckled skin, V67 Heterochromia
Fantasy Sorceress
<lora:V67_Heterochromia:0.9> fantasy sorceress with heterochromia, left eye fiery orange like molten lava, right eye icy white like frozen tundra, magical glow, mystical forest background, V67 Heterochromia

👨 Men – Natural & Sci‑Fi
3. Rugged Portrait
<lora:V67_Heterochromia:0.7> portrait of a man with heterochromia, one eye hazel, one eye grey, neutral background, dramatic side lighting, masculine features, V67 Heterochromia

Cybernetic Soldier
<lora:V67_Heterochromia:0.8> cyberpunk soldier, heterochromia, left eye biological hazel, right eye cybernetic red with targeting reticle, gritty dystopian background, V67 Heterochromia

🐾 Animals – Mammals
5. White Wolf
<lora:V67_Heterochromia:0.8> extreme close-up of a white wolf with heterochromia, one eye deep amber, one eye crystal blue, snow falling, hyperrealistic fur, V67 Heterochromia

Heterochromia Cat
<lora:V67_Heterochromia:0.8> macro photo of a cat with heterochromia, one eye amber, one eye green, whiskers detailed, shallow depth of field, natural lighting, V67 Heterochromia

👽 Aliens – Sci‑Fi & Fantasy
7. Humanoid Alien
<lora:V67_Heterochromia:0.9> humanoid alien with striking heterochromia, left eye ultraviolet purple with slit pupil, right eye iridescent silver with fractal patterns, alien landscape, sci-fi concept art, V67 Heterochromia

Ethereal Alien
<lora:V67_Heterochromia:0.8> alien with heterochromia, one eye cosmic nebula blue, one eye starlit gold, bioluminescent skin, starry background, ethereal, V67 Heterochromia

Strengths

✅ Four‑category support – Works reliably for women, men, animals, and aliens with tailored anatomical accuracy.
✅ Realistic color blending – Colors stay distinct without bleeding into each other.
✅ Lighting consistency – Each eye reflects light independently, maintaining realism.
✅ Genre flexibility – Photorealistic portraits, fantasy, sci‑fi, animal photography, and stylized art.
✅ Anatomical precision – Iris texture, pupil shape, and surrounding details remain natural for each category.
✅ Trigger word variety – Multiple natural‑language triggers activate the effect reliably.
✅ Z-Image Turbo optimized – Takes advantage of Turbo’s fast inference and high‑coherence capabilities.
✅ Low bleed‑through – Minimal unwanted influence on skin tones, fur, or alien textures.

Limitations (Current Version)

⚠️ Color accuracy in extreme lighting – Very strong colored lighting may tint the eyes more than intended; reduce LoRA weight or adjust prompt accordingly.
⚠️ Group scenes – Multiple characters with heterochromia may cause occasional cross‑contamination; best used for one or two subjects.
⚠️ Sectoral heterochromia – Requires careful prompting (e.g., “sectoral heterochromia, brown patch in blue eye”) for consistent results.
⚠️ Animal variety – Primarily trained on mammals; reptiles, birds, or exotic animals may need additional prompt refinement.
⚠️ Alien designs – Very complex or multi‑eye alien designs may require combining with other LoRAs for full effect.

Recommended Settings (Z-Image Turbo)

ParameterRecommended ValueLoRA Weight0.7 – 1.0Guidance Scale3.5 – 5.0Steps4 – 8 (Turbo optimized)Resolution1024×1024 (native)

Tip: Z-Image Turbo excels at low step counts. Start with 4 steps and LoRA weight 0.8. Increase steps to 8 if more detail is needed. The LoRA responds well to Turbo’s distillation.

Trigger Words & Usage

Activate the LoRA using any combination of the trigger words. The model responds to both the keywords and natural language descriptions.

Trigger words (one‑line list):
heterochromia, different colored eyes, two eye colors, mismatched irises, left eye right eye different, dual eye colors, iris heterochromia, contrasting eyes, odd eyes, bicolor eyes

Example prompt structure:
*close-up portrait of a [woman/man/animal/alien] with heterochromia, left eye [color], right eye [color], [lighting], [style], V67 Heterochromia*

For best results:

Specify each eye color separately (e.g., “left eye X, right eye Y”).
Include lighting conditions to enhance color separation.
Use portrait framing to keep eyes prominent.

Example Variations to Try

Warm vs. Cool Contrast (Woman)
*close-up, heterochromia, left eye warm amber, right eye cool arctic blue, dramatic lighting, half face in shadow, V67 Heterochromia*

Masculine Gaze (Man)
portrait of a man with heterochromia, one eye dark brown, one eye steel blue, rugged features, black and white with selective color, V67 Heterochromia

Sectoral Heterochromia (Cat)
heterochromia cat, sectoral heterochromia, blue eye with a brown wedge, realistic iris texture, natural daylight, macro shot, V67 Heterochromia

Glowing Fantasy Eyes (Alien)
alien with heterochromia, one eye gold with slit pupil, one eye silver with ethereal glow, alien jungle background, bioluminescent plants, V67 Heterochromia

Sci‑Fi Soldier (Man)
cybernetic soldier, heterochromia, left eye biological hazel, right eye cybernetic red with targeting reticle, gritty dystopian background, V67 Heterochromia

Training Details

Dataset: 300+ curated images covering:

Women and men with natural and fantasy heterochromia
Animals (primarily cats, dogs, wolves, horses) with complete and sectoral heterochromia
Aliens and sci‑fi characters with creative eye color combinations

Base Model: Z-Image Turbo

Training Method: LoRA with rank 16, alpha 16, learning rate 1e‑4, adapted for Turbo’s distillation architecture

Epochs: 15

Resolution: 1024×1024

Captioning: Detailed natural language captions describing category (woman/man/animal/alien), eye colors, type of heterochromia, lighting, and composition.

Credits & Notes

This LoRA was created to celebrate the natural beauty and intrigue of heterochromia across all forms of life—and beyond. Whether you’re designing human heroes, faithful animal companions, or extraterrestrial beings, V67 Heterochromia will make their eyes unforgettable.

Tagger’s Note: For best results, use with Z-Image Turbo. The model is lightweight and can be combined with other LoRAs (e.g., for style, ethnicity, or specific animal breeds) with minimal interference.

Enjoy bringing unique gazes to life! Share your creations and tag them with #V67Heterochromia.

Two colors, one story – for everyone. 🧬👁️👁️