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A character is a complete interactive AI persona made of six building blocks: Face, Voice, Prompt, Knowledge, Tools, and First Message. This guide walks you through setting up each one.

New to Equos?

Create your account and organization before building your first character.

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Open the character editor

From the Characters page, click the + button in the top-right corner—or go directly to studio.equos.ai/characters/new.
Character editor in the Equos Studio
Give your character a name at the top, then configure each building block on the right-hand panel.
Editing an existing character uses the same flow—just open the character and click the pen button in the top-right to enter edit mode.

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Face

The Face is the visual identity of your character.
  • Upload a single image—photo, painting, illustration, or AI-generated.
  • A clear, front-facing portrait works best; the face should be well-lit and unobstructed.
  • Equos handles lip-sync and facial expressions automatically at runtime.
You only need one image. No multi-angle shoots or training required.

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Voice

The Voice is how your character sounds.
  • Pick a voice from the catalog of built-in options.
  • Preview each voice before selecting.
  • You can change the voice at any time without affecting anything else.

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Prompt

The Prompt (also called the Brain) defines your character’s personality, role, and behavior. Use it to specify:
  • Identity — name, background, role (e.g., “You are Tommy, a friendly product coach…”)
  • Tone — formal, casual, playful, empathetic
  • Scope — what the character should talk about and, just as importantly, what it shouldn’t
  • Style — short replies vs. detailed answers, use of humor, vocabulary level
Keep prompts concrete. “Answer in 1–2 sentences and always ask a follow-up question” beats “be conversational.”

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Knowledge

Attach a Knowledge Base so your character can ground its answers in your own content (RAG).
  • Select an existing knowledge base or create a new one.
  • The character will automatically search it during conversations to find relevant passages.
  • Great for product docs, FAQs, internal SOPs, or any domain-specific content.

Create a knowledge base

Learn how to build and populate a knowledge base for your character.

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Tools

Tools let your character take actions during a conversation, not just talk. Today, tools allow the character to search the internet in real time—so it can answer questions about recent events, look up live information, or fetch data it otherwise wouldn’t know about.
Enable tools when your character needs fresh information that isn’t in its prompt or knowledge base.

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First Message

The First Message is the opening line your character speaks the moment a conversation starts.
  • Sets the tone immediately
  • Introduces the character and what it can help with
  • Invites the user to respond
Example: “Hey, I’m Tommy—your product coach. What are you working on today?”

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Save and chat

Once each block is configured, click Save in the top-right. Your character is live. Head to the character page and click Start Chatting to test it end to end.

Chat with your character

Start a live conversation and try out the mic, camera, and screen-share controls.