An original rigged model based off of the character of the same name from the donghua All Saints Street. The model is fully functional within VRChat, and utilizes newer features of the SDK such as physbones and contact points. There is also a broad range of facial expressions included with the model, with a Demon King form and multiple visemes. The character was modelled, rigged, and textured from scratch over the course of a month, entirely within Blender.
Here's the setup for the reference images I used. I was lucky enough to find a partial turnaround to base the mesh around.
The model ended up being a total of 18.6k tris, which is just under VRChat's quest limitation of 20k.