New Characters + Worlds are live

Be yourself.
Or invent anyone.

Siren gives you two ways to create an identity. Train a true-to-life AI version of you with Create Me — or dream up someone brand new with Create a Character: no photos, no training, ready in moments. Then drop them into worlds, make images, stories and video, chat with them, and share what you build.

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No training needed for characters Private until you publish SMS chat on every plan
Siren app screen 'Create a New Identity' offering Create Me or Create a Character, with Describe Them, Build Them and Surprise Me options
Siren app screen 'Generated Characters' showing the four candidate faces Siren generated for the character Roman Sayer — the same dark-haired man in a navy letterman jacket — with one picked
Two ways to create

The real you, or someone brand new.

Every identity in Siren starts with one choice. Pick the path that fits — you can have both on one account.

Trained

Create Me

Based on a real person — you.

  • Upload a few reference photos
  • Siren trains a persistent identity of you
  • Highest likeness consistency
  • Best for creators and self-content
Instant

Create a Character

Invent someone from scratch.

  • No photos, no training required
  • AI generates their look — you pick the face
  • Ready to create with in moments
  • Best for OCs, stories, brands and campaigns
Create a Character

Describe them. Build them. Or roll the dice.

Character creation that feels like The Sims crossed with AI generation — not a settings panel.

Describe Them

Write who you're imagining in plain words. Siren turns it into four candidate looks.

Build Them

Tap through guided options — gender, age, build, hair, eyes, style — and add details if you like.

Surprise Me

Siren invents the look and the character concept. Add a theme, or don't — then reroll until someone grabs you.

Candidate face 1: studio portrait of a dark-haired young man with storm-grey eyes in a navy letterman jacket
Candidate face 2, selected: the same character with longer, messier black hair
Candidate face 3: another take on the same character, curly dark hair and a navy jacket
Candidate face 4: a fourth variation with a striped letterman collar
1

Pick a faceChoose from four generated looks, or regenerate until one feels right.

2

Siren builds the reference setYour pick becomes a consistent reference identity. Name them and you're done.

3

Add as much or as little as you wantPersonality, background, speaking style, worlds — all optional. A brand model needs a name, not a backstory.

Worlds

Worlds are generative world packs.

A World — a lorebook — holds the lore and the look: characters, locations, events and aesthetic. It doesn't just inform text. It informs generation.

  • Use This World — pick who's in the scene, then choose a location and event from the world
  • Attach worlds to your characters so their scenes stay on-world
  • Build your own, or start from one the community has published
  • The same world feeds images, stories and video
Create with them

Pick a character. Set the scene. Generate.

Choose Image, Story or Video, describe the moment, and pull the location and event straight from a world. Then keep the best take.

  • Save favourites and add them to projects
  • Make variations, or animate a still into video
  • Stories unfold one scene across multiple frames
Siren app result screen showing a generated photo of the character with Save, Add to project, Make variations and Animate (video) actions
Publish & discover

Share characters and worlds. Stay in control.

Everything starts private. When you're ready, publish a character or world and decide exactly what others can do with it.

Three levels of visibility

Private
Only you. The default for everything.
Unlisted
Anyone with the link.
Public
Discoverable in Explore.

Use vs. Remix — your call

Use lets people create with your character while it stays yours. Remix lets them make their own version, credited back to the original. Turn either off at any time.

Creator profiles

Your published characters and worlds live on your creator page, with likes and uses. People can save what they love to their library.

Publish the parts you choose

Publish a character but keep your trained identity private. Share a world and let others bring their own characters into it. Publishing is free.

Explore Use a character or world Generate Remix Publish your own
Character chat

Talk to them — in the app, or by text.

The personality, background and worlds you give a character shape every reply. Chat on the web, or give a character a phone number and text them from your phone like anyone else. Replies can even come with a photo.

  • Web + SMS on every plan — the same character, wherever you are
  • Regular characters reply instantly, on every plan
  • Chat with community characters when their creator allows use
  • 18+ character chat — Ultimate. 18+ characters stay private or unlisted — never public — and are answered on Siren's own GPUs
✨ Lock This Identity

Training is an upgrade, not an entrance fee.

Characters are ready the moment you create them. Fall in love with one and want maximum consistency across future generations? Lock This Identity trains on their reference images — the same high-fidelity path behind Create Me.

How locking works
Why Siren

Built for likeness, not lookalikes.

Identity-locked

Trained identities hold your face across every generation. Characters start consistent from their reference set — and you can lock them when it matters most.

Studio-grade output

Multiple engines under the hood — pick the look you need, from quick takes to magazine-ready portraits, stories and video.

Private until you publish

Your photos, identities and outputs are yours. Nothing appears in Explore unless you choose to publish it. Your library stays private by default.

Be yourself. Or invent anyone.

Siren is open to everyone. Create your account and start with a character in minutes — or train one of you.

Create your account →