An AI character scenario is the short block of setup text that tells the AI where the story starts: the place, the time, what is happening right now, and how the character and you know each other. In most AI character creators it has its own Scenario field next to the character’s personality and first message. The personality says who the character is, the scenario says what situation you are both in, and the first message opens the scene. Character.AI handles this through its Greeting and Definition fields (and separate Scenes), while Janitor AI, SillyTavern and Cherrypop all have a field named Scenario.
What the scenario field does (and what it doesn’t)
A character card is split into a few text fields, each answering a different question.
| Field | Answers | Typical content |
|---|---|---|
| Personality / description | Who is the character? | Traits, speech, backstory, appearance |
| Scenario | What situation are we in? | Setting, time, the current situation, your relationship |
| First message (greeting) | How does the scene open? | The character’s opening line and action |
| Persona | Who are you? | Your name, look and role |
The scenario is a starting state, not a plot outline. Your own character belongs in a persona (see our guide to the Character AI persona), and world facts that only matter when a keyword comes up belong in a lorebook (see what a lorebook is).
SillyTavern’s documentation lists Scenario among the “permanent tokens” sent with every generation request, while the first message is sent only once, at the start. Janitor AI’s help center also counts the scenario as permanent tokens. So a scenario keeps nudging replies all chat long, and a bloated one takes room away from chat history.
How to write an AI character scenario, field by field
Scenario: the situation, in 2 to 5 sentences
Janitor AI’s creation page overview describes the field as the place for “the setting your bot takes place in, the time period, or a very short description of the character’s relationship to the user’s persona.” Use that as a checklist:
- Where and when: one concrete place and time.
- What is happening now: the situation that makes this moment worth playing.
- The relationship: strangers, old friends, rivals or colleagues, and any history.
- Some tension: an open question, like a secret, a deadline or a choice.
Use the present tense and stick to the situation. Traits belong in the personality field, and your reactions belong to you.
First Message: open the scene, then hand it over
SillyTavern’s docs say the model “is more likely to pick up the style and length constraints from the first message than anything else,” and Janitor AI’s page says the intro message “sets the tone for the LLM as well.” Character.AI’s greeting guide agrees: “Write the greeting the way you want every message to read.” Match the length, tense and mix of dialogue and action you want back.
- Put the character in the scenario’s place and moment.
- Show one trait in action instead of naming it.
- End on something you can answer: a question, an offer or a choice.
- Never write what you do, say or feel. Janitor AI notes that third person “often provides the best roleplay results in terms of preventing LLMs from speaking for the user.”
Personality details: behavior, not adjectives
“Mysterious and kind” is vague. “Answers personal questions with a question; quietly fixes things for people without mentioning it” is something to act out. Backstory fits here too, in a few lines. Keep it tight: Janitor AI recommends staying “under 2500 permanent tokens” for the whole bot.
Three example scenarios you can adapt
Each fills in all three fields, so you can see how they divide the work.
1. Snowed in at the rescue hut
Scenario: A mountain rescue hut in the Norwegian backcountry, January, just after 2 a.m. A storm has closed the pass until morning. Ingrid Solberg, 36, is the volunteer warden on duty. You are a hiker she pulled off the trail an hour ago, soaked but unhurt. You have never met. Ingrid has a working radio and a reason she hasn't used it yet.
First Message: Ingrid drops a second wool blanket on the bench and goes back to feeding the stove. "Boots by the fire, not on it. They'll crack." She pours two mugs from a dented kettle and sets one within reach. The wind rattles the shutters. "Pass won't open before seven. So. Are you going to tell me why you were up there alone at midnight, or do we talk about the weather?"
Additional Personality Details: Practical; shows care through actions, not words. Deadpan humor. Deflects questions about herself by asking one back. Former avalanche forecaster who left after a bad season and won't discuss it until trust is earned.
2. The forger at the villa auction
Scenario: The French Riviera, summer 1962, a private auction at a hillside villa. Luca Ferrand, 41, a retired art forger turned discreet consultant, has been hired by you to judge whether the star lot, a small harbor painting, is genuine before bidding opens in one hour. You met this afternoon. He recognizes the painting and isn't sure he wants to say how.
First Message: Luca stands close enough to the canvas to make the guard nervous, hands folded behind his back. He steps back and smiles at nothing. "Beautiful work. The varnish is right. The nails are right. The cracks are almost right." He turns, straightening his cuff. "You're paying for an honest opinion, so here it is: I need ten more minutes and something cold to drink. Walk with me to the terrace?"
Additional Personality Details: Charming, unhurried, speaks in understatement. Never lies outright; leaves things out instead. Loves the craft more than the money. Flirts with ideas and people alike, but turns precise the moment a question is about art.
3. Passage on the courier airship
Scenario: A fantasy world of floating trade cities. The Kestrel, a small courier airship, is two days out from Varn, a city that turns most visitors away. Captain Idris Vale, 33, sold you passage for double fare and asked no questions. Tonight the ship's compass started pointing the wrong way, and Idris has just learned you are carrying something that might explain it.
First Message: The cabin door swings open without a knock. Idris sets a brass compass on the table between you, its needle spinning in lazy circles. "Six years on this route. Never once has it done that." Her eyes move to your pack in the corner, then back to your face. "I said no questions when you came aboard. I'm about to break that promise. You can start, or I can guess."
Additional Personality Details: Blunt, fair, protective of her ship and two-person crew. Keeps promises and expects the same. Quick temper that burns out fast; apologizes with actions. Grew up on the docks of Varn, left on bad terms, and hides how much she wants to go back.
None of the openers says how you react; each ends on a question you have to answer.
How Character.AI, Janitor AI, SillyTavern and Cherrypop handle scenarios
Character.AI: Greeting, Definition and Scenes
Character.AI is a general-audience app. Its creator guides cover name, avatar, tagline, description, greeting, voice and Definition, with no field called Scenario. Scene-setting goes into two places:
- Greeting: “the first thing your Character says when a user opens a new chat.” Per the Greeting and Voice guide, a great greeting “sets the scene,” it can run up to 4,096 characters, it supports
{{user}}for your name, and you can add up to five more greetings that users swipe through before chatting. - Definition: free-form, up to 32,000 characters, per the Character Definition guide. The older creator book’s “Setting a Scene” page notes that the Definition “won’t be shown to the user in the chat,” so you can set up context there. The guide warns that “the further down something sits in the Definition, the less reliably it shapes your Character’s behavior,” so put the scenario near the top.
Character.AI also opened Scenes to all creators in October 2025: reusable setups with their own setting, backstory, player goal, introduction and greeting. An “Any Character” Scene works with whichever character you pick, so its guide tells writers not to prescribe the character’s personality or emotions.
Janitor AI: Personality, Scenario and Initial Message
Janitor AI’s character creation page overview lists Personality (required: traits, appearance, backstory, dialogue examples), Scenario (optional) and Initial Message (required). The Character Bio “is not used within the bot itself”; it is for people browsing. For ready-made setups, see our Janitor AI prompts.
SillyTavern: the Scenario box
In SillyTavern’s character design docs, Scenario is “the circumstances and context of the dialogue.” It sits under Advanced Definitions, hidden by default. Alternate Greetings appear as extra swipes on the first message.
Cherrypop: Scenario, First Message and Additional Personality Details
On Cherrypop, an uncensored AI chat and roleplay platform for adults 18+, the character creator has Scenario, First Message and Additional Personality Details under Advanced settings. There is no separate Backstory tab: background and context go in Scenario and Additional Personality Details, which feed the character card the chat reads, and the First Message is the character’s opening message. For the full field map, including which fields only shape the portrait, see our AI character creator guide.
AI Assisted is on by default and enhances your text fields during creation, so review the result, or turn it off first to keep your exact wording. Each chat keeps a copy of the character card from its first turn, so editing a character later does not rewrite existing chats: start a new chat to try an edited scenario. Cherrypop is free to start, with limits; saving the final character and generating images use Cherries (the site’s credits) or premium.
| Platform | Where the scenario goes | Opening message | Notes |
|---|---|---|---|
| Character.AI (general-audience app) | Greeting and top of Definition, or a separate Scene | Greeting, plus up to five more | Definition up to 32,000 characters; put key text first |
| Janitor AI | Scenario (optional) | Initial Message (required) | Bio is not used by the bot; stay under 2,500 permanent tokens |
| SillyTavern | Scenario (Advanced Definitions) | First message, plus alternate greetings | Scenario sent every request; first message once |
| Cherrypop | Scenario (Advanced settings) | First Message | No Backstory tab; existing chats keep the card they started with |
Sources: the vendors’ help pages linked above.
Common scenario mistakes
- Writing a plot, not a situation. “They fall in love, fight, then reconcile in Paris” hands the model a script to rush through.
- Deciding your reactions. “You are nervous and can’t stop staring” invites the bot to keep narrating your side.
- Repeating the personality. Restated traits spend tokens twice.
- A first message that contradicts the scenario. If the scenario says 2 a.m. in a storm and the greeting says “Lovely sunny day!”, the model has to pick one.
- A wall of text. A long first message teaches long replies, and a long scenario leaves less room for chat history.
- Testing edits in an old chat. On Cherrypop an old chat keeps its original card, and Character.AI’s persona guide says to start a new chat after saving a persona. If a character forgets details mid-chat instead, see how Character AI memory works.
FAQ
What is a scenario for an AI character?
Setup text describing the situation you and the character start in: place, time, what is happening and how you know each other. The model reads it as context next to the personality. It guides replies; it does not script them.
What is a Character AI greeting?
The first message your character sends when a new chat opens. Character.AI’s guide says a great greeting sets the scene and ends with a hook; it can include {{user}} to address you by name, and creators can add up to five more greetings to swipe through.
What should go in the Janitor AI scenario?
Per Janitor AI’s help center: the setting, the time period, or a very short description of the character’s relationship to your persona. Keep it short, since it counts toward permanent tokens.
How do I write a Character AI bot?
Give it a clear name, tagline and description, write a greeting that sets the scene and ends with something to answer, and use the Definition for personality, example dialogue and context, most important parts first. Test changes in new chats.
Does editing a character change my existing chats?
On Cherrypop, edits don’t rewrite existing chats: each chat keeps a copy of the character card from its first turn. Start a new chat to try your changes.
Write your first scenario on Cherrypop
Cherrypop is the easiest place to put this into practice. Take one of the examples above, change the names and details, and paste each part into Scenario, First Message and Additional Personality Details in the Cherrypop character creator, then generate a portrait of your character in realistic or anime style. Prefer to jump straight in? Pick from a big catalog of ready-made characters at cherrypop.ai (18+). It works in any mobile browser and is free to start.