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Step one: fix the core contrast
Start with a single sentence stating what she wants and what stands in her way. Worked example: a courier in a flooded port city wants to find the crew that abandoned her, but she distrusts everyone who offers help. Then choose three traits that can be drawn or played: a quick temper, a steady stance, a habit of waiting before acting. Link each trait to one visible detail, such as a hooded jacket or a coiled-scarf silhouette. This sentence and trait list become the header of the page and the brief for any artist, writer or designer joining later.
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Step two: write the origin in three beats
Keep the origin short and sequenced: the loss or event that changed her, the first moment she used her skill, and the choice that put her on the current path. In the courier example, beat one is the night the crew left, beat two is a rooftop escape using a hooded dive, and beat three is her decision to take a dangerous job for answers. Add one image per beat, even rough thumbnails. Avoid listing every secret; leave two questions unanswered so readers have a reason to return and a comic, level or product drop has material to reveal.
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Step three: add reference blocks and a next action
Beneath the story, place compact blocks that others can reuse: a color palette, a silhouette sheet, a short voice sample, a list of allies and rivals, and a note on what she would never do. For the courier, include two lines of dialogue and a palette of teal, rust and bone. Finish with one clear next action, such as reading chapter one, trying the demo level or viewing the first apparel sketch. Review the page after each new release so the profile stays accurate, and keep older versions to track how the character has evolved.