OC Character Face Block

OC Character Face Block is the biggest single catalog in the pack - 358 options spread across ten subcategories - and it's the one you'll spend the most time in. It covers everything from structural face shape down to the weirdly specific booru tags this ecosystem runs on: face shape, general facial features, ears, eyebrows, eyes, pupils, nose, mouth, teeth, and tongue.

That last group is where this block gets fun. Because it's drawing on Danbooru-style tags, you're not limited to "blue eyes, smile." You get the whole expressive vocabulary: ahegao, ;p, :>, :0, :3, animal ears (aguar_ears, alpaca_ears, angel_ears), alien ears, star pupils (+_+), tongue-in-the-corner-of-the-mouth tags. If your character needs a very specific anime face, this dropdown almost certainly has the exact tag - and the tag the model actually understands, which beats your paraphrased sentence every time on the Illustrious/NoobAI lineage.

How it works

Same block-node system as the rest of the pack, and the parts that matter:

• group - filter to one subcategory (mouth, pupils, ears, …). Default is __all_groups__ (everything).
• mode - fixed / randomize / increment / decrement. For expression-heavy catalogs like this, randomize is genuinely useful for concept exploration - same seed, same face, guaranteed.
• option - the static dropdown over all 358 entries, formatted subcategory | Chinese label -> English tag (e.g. 瞳孔 | 十字星星眼 -> +_+).

The gotcha is the same one that bites every block node in this pack, so it's worth internalizing once: the option dropdown is static and does not filter down when you change group. Pick a mouth option, then switch group to "ears," and at execution the block finds your mouth pick isn't in the ear pool - it falls back to the first ear option and logs the mismatch in debug_text. So the dropdown order and your group setting can silently disagree, and debug_text is how you find out.

One subtlety specific to this block: it's a "face structure and expression-capable features" block. Emotion states like smiling or angry live in a different node (the presentation expression block), which also outputs to the Face category. If your character ends up expressionless, check that you're not fighting between two face-flavored blocks - only one of them is this one.

Outputs

The standard three: oc_block (wire into OC Generator), prompt_preview (the resolved tag), and debug_text (group, pool index, and any fallback notes). The enabled toggle lets you keep the block in the graph while silenced, and seed/step drive the randomize and increment modes.

Installing it

cd ComfyUI/custom_nodes
git clone https://github.com/Zhuozhuo-219/ComfyUI-OC-Generator

Restart ComfyUI - or ComfyUI Manager, searching ComfyUI-OC-Generator. No dependencies beyond the host ComfyUI runtime, no model downloads. The catalog rides in the repo.

The honest caveat: the pack is new and under-discussed, and the face catalog is a curated cut, not the full Danbooru list. It's deep where anime faces are deep, but if your OC needs a face trait that isn't in the 358, drop it in OC Generator's prefix_prompt instead of fighting the dropdown.