The AI Headcanon Generator gives you four tools: character, relationship, random, and incorrect quotes. You’ll get better results (and use fewer credits) if you feed them a bit of direction. Here’s what works.
Be specific in the prompt
“Villain” is vague. “Villain who cares about one person and is cold to everyone else” gives the model something to hook into. Same for relationships: “enemies to lovers, still bickering” beats “romance.” Use the focus and tone options; they’re there so the first output is closer to what you want. All four generators live one click away on the homepage.
Use character before relationship
If your ship feels generic, you might be skipping the “who are they alone?” step. Run each character through the Character Headcanon Generator first—habits, internal voice, small reactions. Then open the Relationship Headcanon Generator with those two people in mind. The chemistry will feel more specific because the generator has “who they are” to work with. You can jump between tools from the main site.
Iterate once or twice
Sometimes the first result is 80% there. Change the focus or tone slightly and run again instead of discarding the idea. The Random Headcanon Generator and Incorrect Quotes Generator are great for quick iterations—short outputs, easy to compare. Bookmark the AI Headcanon Generator homepage and treat the generators as a lab: try a few runs, keep what fits, and drop the rest into your notes for later.