What Is a Headcanon Generator?

A headcanon generator is using text to image model (like the WAN 2.1 AI model) I to transform your imagined character backstories, relationships, or alternate universe (AU) scenarios into something you can actually see and share — in the form of a video.

How the AI Generator Works

On platforms like RunC.AI, creators can rent GPU instances and install AI models to bring their headcanons to life. Simply input your character description, backstory, emotional tone, and scenario — and the model will generate a video for you.

If you prefer working with images, you can also use ComfyUI for generating high-quality visuals (check out our ComfyUI guide).

Build My first Headcanon

How to Get Started

Here’s how to create your own headcanon video in just a few steps:

Using RunC.AI:

1.  Deploy a GPU instance on RunC.AI | Run clever cloud computing for AI

Deploy an Instance at RunC.AI
Deploy an Instance at RunC.AI
Configure the Container Image and Click Deploy on Demand
Configure the Container Image and Click Deploy on Demand

2.  Log into your PyTorch environment

Open the JupyterLab
Open the JupyterLab

3.  Install the WAN 2.1 model

Open Terminal in RunC Instance
Open Terminal in RunC Instance
Install Wan 2.1
Install Wan 2.1

git clone https://github.com/Wan-Video/Wan2.1.gitpip 
install wheel
cd Wan2.1
export CMAKE_BUILD_PARALLEL_LEVEL=16
export MAKEFLAGS="-j16"
sed -i 's/^flash_attn$/flash_attn==2.7.3/g' requirements.txt
pip install --no-build-isolation -r requirements.txt
pip install "xfuser>=0.4.1"
apt-get install -y libgl1 libglx-mesa0

Install Wan 2.1

4.  Input your prompt (character, tone, story)

python generate.py  --task t2v-1.3B --size 832*480 --ckpt_dir /model/HuggingFace/Wan-AI/Wan2.1-T2V-1.3B  --offload_model True --t5_cpu --sample_shift 8 --sample_guide_scale 6 --prompt "Two Spongebobs are fighting for a Krabby patty."

You can modify the size, sample shift, sample guide scale and prompt

5.  Generate and download your video

Generate your Headcanon Video and Download
Generate your Headcanon Video and Download
Download your Headcanon Video
Download your Headcanon Video
Deploy My First Headcanon Video

FAQ

Q: Is the headcanon generator free to use?

A: Yes! There are many free and community-built tools available (like on perchange.org but only offer text generator).

RunC also offers free credits for new users — just complete the short survey on the homepage to claim yours.

Q: What kind of AI does it use — image, voice, or both?

●  A: It depends on your output:

    • For images: use ComfyUI
    • For video: use WAN 2.1

RunC also offers preset templates and allows you to upload your own assets.

Q: Can I monetize the content I generate?

  • A: Absolutely. RunC encourages creators to share and grow their work. Post your videos on X, Instagram, YouTube — or even sell templates, prompts, or finished edits.

Ready to see your headcanon in motion?

Try it now