| --- |
| license: other |
| license_name: minimax-h3-community-license |
| license_link: https://huggingface.co/MiniMaxAI/MiniMax-H3/blob/main/LICENSE |
| tags: |
| - comfyui |
| - workflow |
| - minimax-h3 |
| - character-sheet |
| - turnaround |
| - character-consistency |
| pipeline_tag: image-to-image |
| --- |
| |
| # H3 Character Sheet Generator |
|
|
| I started this since I was struggling to find good accurate high quality images I can use as reference for H3, so I realised this model has excellent character consistency and the ability to take up to 9 reference images. |
|
|
| Throw in some rough reference images, get back a character sheet you can reuse forever. |
|
|
| <img src="https://huggingface.co/PoopMan333/H3_Character_Sheet_Generator/resolve/main/examples/CelticKnight%20-%206%20panel.png" alt="Celtic Knight character sheet" width="60%"> |
|
|
| Like a lot of you I've been messing about with H3 and got a bit obsessed with the multi-image |
| reference side of it. You can feed it up to **9 images**, which means you can build a character out |
| of bits — a face from here, armour from there, a hat from somewhere else — and it'll actually hold |
| them together. |
|
|
| So this workflow does that, spins the character 360 (or 180 if using 4 panel version), and spits out a reference sheet you can use to |
| keep them consistent in everything you make afterwards. |
|
|
|
|
| <img src="https://huggingface.co/PoopMan333/H3_Character_Sheet_Generator/resolve/main/examples/CelticKnight%20-%20Example.PNG" alt="Celtic Knight inputs" width="100%"> |
|
|
| --- |
|
|
| ## Why bother with a video model for this |
|
|
| If you generate six images of the same character separately, they'll disagree with each other. Jaw |
| shifts, jacket changes, colours drift. You know the drill. |
|
|
| Six frames from **one** video generation can't do that — they come out of the same pass. That's the |
| whole trick. The camera does a slow orbit with no hard cuts, the character stands still like a |
| statue, and then the workflow grabs six frames and stitches them together. |
|
|
| --- |
|
|
| ## How it works |
|
|
| 1. You drop in your images and describe them in the **Input Text (A Prompt)** box |
| 2. That added with a **B Prompt** which handles the spin, pose, lighting etc. |
| 3. It generates a slow 360 with no hard cuts, so the character stays consistent |
| 4. 6/4 frames get grabbed and stitched into the sheet |
|
|
| You also have the option for a 360 spin video and every individual frame as optional outputs, if you want to pick your |
| own angles or use single frames as references later. |
|
|
| --- |
|
|
| ## Two versions |
|
|
| | File | What | |
| |---|---| |
| | `H3_CharSheetMaker_6_Panel.json` | Front, both sides, back, plus two face shots | |
| | `H3_CharSheetMaker_4_Panel__Faster_.json` | Four views, ~40% fewer frames, noticeably quicker | |
|
|
| Same knight, 4-panel: |
|
|
| <img src="https://huggingface.co/PoopMan333/H3_Character_Sheet_Generator/resolve/main/examples/CelticKnight%20-%204%20panel.png" alt="Celtic Knight 4 panel" width="60%"> |
|
|
| --- |
|
|
| ## What you need |
|
|
| **Models** — every loader node has its download link baked in, so ComfyUI should just offer to grab |
| whatever's missing when you open the workflow. |
|
|
| | Slot | File | Goes in | |
| |---|---|---| |
| | Diffusion | `minimax_h3_ref2va_pruned_int8_convrot.safetensors` | `models/diffusion_models/` | |
| | Text encoder | `qwen3vl_32b_minimax_h3_int8_convrot.safetensors` | `models/text_encoders/` | |
| | Video VAE | `minimax_h3_video_vae_int8_convrot.safetensors` | `models/vae/` | |
| | Audio VAE | `minimax_h3_audio_vae_fp32.safetensors` | `models/vae/` | |
| | Turbo LoRA (optional) | `minimax_h3_ref2v_turbo_4step_v0.1_comfyui_bf16.safetensors` | `models/loras/` | |
|
|
| Those are the INT8 low-VRAM builds. If you've got the headroom, higher precision versions give better |
| detail — the text encoder especially, that's where prompt adherence lives. |
|
|
| **Custom nodes** — I tried to keep this close to vanilla. The only third-party stuff is in the |
| optional Speed Ups group: |
|
|
| - [KJNodes](https://github.com/kijai/ComfyUI-KJNodes) |
| - [rgthree](https://github.com/rgthree/rgthree-comfy) (just the toggle panel) |
|
|
| Delete that group if you want to. |
|
|
| --- |
|
|
| ## Writing the A Prompt |
|
|
| One line per image. Say what to take, and — this bit matters more than people expect — say what to |
| **ignore**: |
|
|
| ``` |
| <Picture 1> - keep the photo style. Use the bald head, facial hair, physique. |
| <Picture 2> - keep only the black outfit. Remove the hair, remove accessories. |
| <Picture 3> - use the shield. It is attached to the man's back. |
| ``` |
|
|
| If you don't rule things out by name, backgrounds and the wrong person's hair sneak through. |
|
|
| Also worth describing clothing **in words**, not just showing it. Faces carry across on their own but |
| wardrobe drifts. "Black high-collared coat with silver buckles" sticks. "The coat from Picture 2" |
| wanders off. |
|
|
| --- |
|
|
|
|
| ## Anime to Real |
|
|
| Someone asked if it could do anime to realistic, so there's a modified B prompt for that too. It's |
| surprisingly good at it. |
|
|
| **Haruhi:** |
|
|
| <img src="https://huggingface.co/PoopMan333/H3_Character_Sheet_Generator/resolve/main/examples/Haruhi%20A2R%20-%206%20panel.png" alt="Haruhi anime to real" width="60%"> |
|
|
| **Sanji:** |
|
|
| <img src="https://huggingface.co/PoopMan333/H3_Character_Sheet_Generator/resolve/main/examples/Sanji%20A2R%20-%206%20%20panel.png" alt="Sanji anime to real" width="60%"> |
|
|
| And here's the actual video that came from, so you can see how the thing works — slow spin, no cuts, |
| then a couple of face shots at the end: |
|
|
| <video controls width="480" src="https://huggingface.co/PoopMan333/H3_Character_Sheet_Generator/resolve/main/examples/Sanji%20A2R%20-%20Spin%20Video.mp4"></video> |
|
|
| The six panels are just frames pulled out of that. |
|
|
|
|
|
|
| --- |
|
|
|
|
| ## Objects |
|
|
| The model also does a excellent job of doing objects, however it is advised to show more angles as reference images. |
|
|
| <img src="https://huggingface.co/PoopMan333/H3_Character_Sheet_Generator/resolve/main/examples/shield%20example.png" alt="random shield picture i found on google" width="60%"> |
|
|
|
|
| --- |
|
|
|
|
|
|
|
|
| ## Caveats (being honest here) |
|
|
| **It's slooooow.** You're generating 124 frames to use 6. That's the fundamental silliness of the |
| approach. The 4-panel version helps by only generating 73 frames and taking 4 (40% speed up). |
|
|
| **Speed-ups cost you something.** Turbo LoRAs and caching do make it faster, but prompt adherence and |
| quality take a slight hit. Worth it most times except final pass. |
|
|
| **Quality is limited.** It's a video model, it's better at video than stills. Crank the resolution and steps if |
| you care, and pay for it in generation time. |
|
|
| **The sheet alone might not be enough for close-ups.** Resolution per panel is what it is. For close |
| work I'd use the sheet *plus* some detail shots — face, clothing texture, whatever matters. And |
| honestly, for a one-off video you might be better off skipping the sheet and just using your |
| originals. |
|
|
|
|
| --- |
|
|
| ## Tips |
|
|
| - **More steps** = slightly better quality, if you're willing to wait |
| - The B prompt says **"neutral A pose"** — delete that bit if you want a specific pose |
| - **Use several different shots of the same character.** More angles in, better 360 out |
| - **Works on objects and props too.** You'll want to tweak the B prompt, mainly swapping the face |
| close-ups for detail shots |
| - Frame timings shift between runs. If a panel looks off, turn on the "save all frames" output, find |
| a better frame number and plug it into the subgraph. Re-stitching is cached, so it's instant |
|
|
| --- |
|
|
| ## Licence stuff |
|
|
| The workflow files are mine, do what you like with them. |
|
|
| **The model isn't.** MiniMax H3 has a community licence that excludes the EU, UK, South Korea and the |
| USA, and it covers *outputs* as well as the weights. If you're planning anything commercial, go read |
| [the actual licence](https://huggingface.co/MiniMaxAI/MiniMax-H3/blob/main/LICENSE) rather than taking |
| my word for it. I'm not a lawyer. |
|
|
| --- |
|
|
| Built on [Comfy-Org/MiniMax-H3](https://huggingface.co/Comfy-Org/MiniMax-H3). Shout if you break it |
| or improve it. |
|
|
| By C_Nugget |
| |
