In the Creating non-human Characters Guide, Danilo, (independent researcher and artist), and I put together a DYI road map for crafting beyond human characters, drawing from philosophy, acting, biology, SF and animism.
You can develop the virtual (avatar) character further at inworld and even export it to Roblox to add your character(s) to an existing place.
Danilo created a metaverse experience for the Rio Sagrado AI-vatar using inworld and roblox. You can chat with the river here
More info at: Sympoiesis