Describing Your Character in an AI Story, Briefly

Describing your character in an AI story is a job for three sentences, not a profile page. A live narrator keeps what your character does and loses most of what you declare about them, so the quickest way to establish a person is to put them in a room and let them act. Write down only what you could not act out.

• A narrator holds facts a scene can check and discards adjectives it cannot.
• Three scenes establish more about a character than a page of background does.
• Pre-written interactive fiction asks for a character up front because its engine needs values before any prose runs.
• A detail worth writing down is one that will come back: a limp, a debt, a uniform, a name.
• A description the story got wrong can be overruled by a reader note, which outranks the story’s own record.

Why does a character profile not work in a live story?

Search for advice on this and you are handed character-description generators: fill in appearance, personality, background and abilities, then paste the result somewhere. Those tools were built for chatbots and non-player characters, which have no story yet. For them a persona is the only thing there is. You are in a different position, because you have scenes, and a scene is stronger evidence than a bio.

Pre-written interactive fiction asks up front for a third reason again: its engine needs numbers before any prose runs. The sample game shipped with ChoiceScript describes its player through a stats screen holding a percent of Leadership and an opposed_pair of Strength against Weakness. Two values, declared before the first sentence. The description is a schema and filling it is the only way in.

A live narrator has no schema waiting. It has the opening you wrote and whatever happens next.

What describing your character in an AI story actually does

Your description enters the story’s record as claims. In Fabledrift, an interactive fiction app for Android, the narrator is handed a structured memory of the story — facts, characters, places, promises — before it writes each scene, and your opening sentences arrive there as assertions like any other. Assertions a later scene can check tend to survive. Assertions nothing can check tend to sit.

That is the whole mechanism, and it explains the lopsided results people report. “I am brave” is not a fact a scene can confirm or contradict, so it stays inert. “I favor my left leg since the mill fire” shows up the first time you run, climb or stand too long, and the narrator reuses it because the story keeps giving it occasions.

Adjectives are not facts

Three sentences from a real opening, in rising order of usefulness:

• I am a clever and resourceful thief. Two adjectives and a job title. Nothing in the room can test any of it.
• I am a thief; my hands are burned. One checkable detail. It will come back whenever you touch something.
• I am a thief with burned hands, and the woman I stole from is two streets away. A detail and a debt. The story now has somewhere to go.

There is a technical reason the demonstration beats the label. Anthropic’s prompting guide, written for developers rather than readers, notes that “examples are one of the most reliable ways to steer Claude’s output format, tone, and structure,” and recommends three to five of them. A scene in which your character acts is an example. A profile is an instruction, and instructions steer less firmly than demonstrations do.

Which three scenes establish a character?

The first three scenes do most of the work, and each one settles something different. You do not have to plan them. You only have to notice that they are happening and spend them on the character rather than on scenery.

Scene one is for the body. Do something physical and let the narrator see how you do it. Reaching, running, hesitating at a door: each of them is an occasion for a mark you wrote down to become visible in prose, which is where it starts being remembered.

Scene two is for the voice. Say something to someone. A spoken line comes back in quotes, and the register you use — clipped, formal, wheedling — is what the narrator will match for the rest of the story. This is also the cheapest way to fix a name, which matters more than most readers expect; naming a character before they blur is half of keeping them distinct.

Scene three is for the refusal. Decline an offer, leave someone behind, break a rule the world has shown you. Every narrator leaves two to four openings on the page as suggestions, and turning one of them down is the single most characterizing move available to you. A person is defined by what they will not do more sharply than by what they will.

Which details are worth writing down up front?

A detail earns its place in the opening if a later scene has some occasion to use it. Everything else is better left for the story to discover, or left out.

Detail	Write it up front?	Why
A visible mark — limp, scar, burn, missing finger	Yes	Every scene with a body in it gives the narrator a reason to use it.
Your name, and the name of anyone with you	Yes	Names anchor the record; unnamed people drift into “the man” and blur.
An obligation — a debt, an oath, someone waiting	Yes	It is a hook the narrator can pull whenever a scene goes slack.
Your role or trade	Usually	It sets what rooms you can enter and whose attention you draw.
Temperament — brave, cautious, cruel	No	Nothing in a scene can confirm it. Act it instead.
Appearance beyond one or two marks	No	Hair color rarely becomes an event. It spends attention and returns nothing.
Backstory with nothing still owed	No	A closed past has no hook. A secret the story has to earn is worth more than a history.

Most of describing your character in an AI story reduces to one rule, simple enough to apply without the table: write down what would have consequences, and act out what would only have adjectives. If you want a longer treatment of the opening itself, starting a story the narrator can hold covers the first move in more detail.

What if the narrator describes your character wrong?

Correct it in the story rather than in your head. Three remedies exist and they escalate neatly. Stepping back to one of your own earlier scenes is free and always available, and it is the right tool when the wrong detail has only just appeared. Asking for the scene to be retold is free with the Apprentice and once a day with the Chronicler and the Oracle, which suits a scene that went wrong in tone rather than in fact.

The durable fix is a reader note. You can tell the story to remember something — a name, a promise, how you want to be described — and when that note contradicts the story’s own record, the note wins. The journal shows what the narrator is holding, so you can check the record instead of guessing at it. A character who keeps drifting is usually a character whose defining fact was never written into a scene.

A character you would recognize from across the room

The test is not whether your description is complete. It is whether a stranger reading scene four could pick your character out of a crowd and predict one thing they would do. That takes a mark, a voice and a refusal, and all three fit in less text than a profile form asks for. Describing your character in an AI story is finished when the story can do it for you. Give the narrator a person with something at stake, then spend the rest of your attention on reading what comes back.