The Kyperxia Community allows using custom minis in Talespire through a 3rd party mod system. Due to time constrains players are required to get their mini ready themselves. Below are instructions for getting minis in from HeroForge, though process is similar for any 3d model you might have.
Step 1
Install Mod Manager
Step 2
Install Custom Mini Mod
Step 3
Build your mini on hero forge with the following specifications.
Step 4
Purchase or download the "Digital table top" version of the mini.
Step 5
Unpack the unity package using the following program
Step 6
Open the 3d model in blender
Step 7
Scale the model
Step 8
Apply Model texture
Step 9
Export model as .obj file to proper directory
Step 10
Start modded Talespire and make sure everything works.
Step 11
Sync Custom Minis Directory
Step 12
Upload your mini to community directory.