How to create a character on Janitor AI?
To create a character on Janitor AI, log in, click 'Create Character,' then fill in the name, avatar, personality, scenario, greeting, and example dialogue. As of 2026-07 it's free, and you choose whether the bot is public or private. Detailed, specific profiles produce more consistent roleplay.
Why — the first-principles explanation
Creating a character is really writing the instructions the AI will obey. The model has no personality of its own, so every field you fill, name, personality, scenario, greeting, is stitched into a hidden prompt (the character card) that's sent to the model on every message. The richer and clearer that card, the more consistent your bot behaves.
The fields do different jobs. Personality defines who the character is; scenario sets the situation the chat starts in; the greeting is the bot's first message and sets the tone; and example dialogue shows the model how the character speaks, which is often the single biggest lever on quality. Vague fields produce a generic bot; concrete traits, quirks, and sample lines produce a distinct one.
Because the card counts against the context window (about 9K tokens on the free tier), there's a trade-off: a longer, more detailed definition eats memory that could hold conversation history. Good creators write tight, high-signal profiles, specific but not bloated, so the bot stays in character while still remembering the chat.
An example that makes it click
Making a character is like writing an actor's script and stage directions before a play. You give the actor a name and a personality sheet ('sarcastic detective, hates coffee, speaks in short clipped sentences'), set the scene ('a rainy 1940s office'), hand them their opening line, and show two sample lines so they nail the voice. Hand over a vague page and you get a bland actor; hand over vivid, specific notes and the character comes alive.
How to do it
- Log in at janitorai.com and click 'Create Character' (the plus or create button).
- Enter a name and upload an avatar image.
- Write the personality: traits, background, likes, dislikes, and speaking style.
- Set a scenario describing the situation where the chat begins.
- Write a greeting, the bot's first message, to set the tone.
- Add example dialogue lines so the model learns the character's voice.
- Choose public or private, add tags, then save and test the bot in a chat.
Key facts
- Character creation on Janitor AI is free and done through the 'Create Character' page.
- Key fields include name, avatar, personality, scenario, greeting, and example dialogue.
- Everything you enter becomes the hidden 'character card' sent to the model each message.
- Example dialogue strongly shapes how consistently the bot speaks in character.
- The card shares the ~9K-token free context window, so concise, specific writing works best.
▶ The 60-second explainer (script)
Want to build your own character on Janitor AI? Here's how, and it's free, as of July 2026. Log in and click 'Create Character.' Now you're really writing the instructions the AI will follow, because the model has no personality until you give it one. Start with a name and an avatar. Then the important part: the personality field. Be specific, traits, background, likes, dislikes, and how they talk. Next, set a scenario, the situation your chat opens in, and write a greeting, which is the bot's first line and sets the mood. Then add a couple of example dialogue lines. This is the secret sauce; it teaches the model your character's voice better than anything else. Finally, choose public or private, add some tags, and save. One tip: keep it detailed but tight. All that text shares the memory window with your conversation, so vivid and specific beats long and rambling. Test it in a chat, tweak, and you're done.
What authoritative sources say
People also ask
Is creating a character free?
Yes. Character creation is free; you only pay if you subscribe to Janitor+ or connect a paid external model.
What makes a character reply consistently?
Detailed personality fields and, especially, example dialogue that shows the model exactly how the character speaks.
Can I keep my character private?
Yes. You can set a bot to private so only you can chat with it, or make it public for others.
Why does a longer profile sometimes hurt?
The character card shares the ~9K-token memory window, so an overly long profile leaves less room for chat history.