In SpatialChat, you can use third-party apps to change your camera image. We recommend using RemoteFace
To create a virtual avatar, you can use the photo you have on your computer or scan the QR code from your smartphone and take a new image.
When you upload your photo, after a while, your avatar will be created.
How it was with me:
After that, you can select a new camera when entering SpatialChat
You can also find a picture of your favorite character on the Internet and use it instead of your photo.
For example, this guy: