Start from a face and a short brief
Upload an authorized portrait and add notes, a small bio, or a scene prompt. TheirSide helps turn that material into a private fictional character profile.
Avatar lab
Upload a portrait. Enter the room.
Upload an authorized portrait, shape a private fictional profile, then use the character in 1v1 chat, group rooms, and story scenes.
What you can build
A character is more than a profile card
Generate avatar candidates when enabled
Use the uploaded portrait directly or create styled avatar options where image generation is available for your account and environment.
Bring the character into chat
Created characters appear in your workspace so they can talk 1v1, join freeform AI group chats, or take a role in a scene script.
Workflow
From upload to playable character
Upload avatar
Use an image you have the right to use. The creator keeps consent visible before upload.
Shape the profile
Generate or edit name, personality, boundaries, style, and the parts that make the character recognizable.
Choose media
Pick the uploaded avatar or a generated candidate, preview voice options, and submit an authorized sample on supported plans.
Start chatting
Use the character in private chat, AI group chat, and story-style group scenes.
Why it matters
Custom characters make group chat better
1v1Test a character voice privately before putting them in a room.
GroupMix system characters and your own characters in a shared conversation.
StoryAssign created characters into scripted scene roles when the scene needs specific tension.
ControlDelete your account and personal chat data when you need to leave the workspace.
FAQ
AI character creator FAQ
Can I upload any avatar?
Use only images and materials you have the right to use. TheirSide keeps this consent boundary visible in the creator.
Can the character join AI group chat?
Yes. Created characters are built to work in the same private workspace as 1v1 chat, freeform group chat, and scripted scenes.
Does avatar or image generation always run?
Image and avatar generation depend on account access, feature flags, and provider configuration. The creator falls back to the uploaded avatar when generation is unavailable.
Avatar lab