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    BulkedUp AI: Hyper Muscles & Anatomy (Male Human / Anthro) - BulkedUp AI R2
    NSFW
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    Hello,

    Here is the BulkedUp AI LoRA that was made with Kohya's GUI. The purpose of this LoRA was to create bigger buff dudes on different Stable Diffusion models. I personally use the LoRA between 0.3 to 0.5 strength, with 0.3 strength adding a bit of muscle and 0.5 going even bigger. Although this LoRA can work on different models, this LoRA works really well with a normal model merged with a furry one. One model merge that I'd like to recommend is a model merge between Gay621 Solo Male Focus and Homoerotic v2.0, with a weighted sum multiplier of either 0.3 or 0.5.

    Using default E621 tags with spaces, like huge muscles, works really well with the LoRA

    One thing I would like to mention about this LoRA is that if it output dudes that are too huge or have bizarre anatomy, sending them to img2img or inpaint with high denoising strength (between 0.4-0.7) could really help fix them.

    = Training =
    - This LoRA was trained on photorealistic AI images, with each image containing only one muscular male.
    - The LoRA was trained on a model merge between Yiffy-e18, Analog-Diffusion-1.0, and HassanBlend 1.5.

    - The training settings for the LoRA is from Aitrepreneur's LoRA training video, which is found here: https://www.youtube.com/watch?v=70H03cv57-o&t=960s
    = NOTE: The LoRA training used the LoraBasicSettings.json file from the linked video, with "mixed_precision": "bf16" and "save_precision": "bf16", changed to "mixed_precision": "fp16" and "save_precision": "fp16" due to bf16 giving an error when used.

    Description

    VERSION 2: BULKEDUPAIR2

    = CHANGELOG =

    -Completely revamped the dataset with 88 images featuring bigger AI generated photorealistic muscular male anthros/humans.

    Image Grid Model Comparisons from seeds 1-5:

    -3 for Fluffusion

    -3 for Fluffusion-GAIJourney 2.0 (0.5 weighted sum merge)

    -1 for GAIJourney 2.0

    FAQ

    Comments (2)

    PolygonFeb 10, 2026
    CivitAI

    Comfy didn't quite grasp the meaning of the word scary in the negative prompt.

    Mr_Yakuza
    Author
    Feb 11, 2026

    Thank you for your comment. And honestly, that negative prompt I used was something I carried over from the SD 1.5 days and didn't let go. I know I should be trying some embeddings but haven't gotten around to it. I think it might be a good time to check that out. 🤔

    LORA
    SD 1.5

    Details

    Downloads
    32
    Platform
    CivitAI
    Platform Status
    Available
    Created
    2/9/2026
    Updated
    5/18/2026
    Deleted
    -
    Trigger Words:
    big muscles
    huge muscles
    hyper muscles
    big balls
    huge balls
    hyper balls
    big penis
    huge penis
    hyper penis
    big pecs
    huge pecs
    hyper pecs
    big bulge
    huge bulge
    hyper bulge

    Files

    BulkedUpAIR2.safetensors

    Mirrors

    CivitAI (1 mirrors)