A toolset that can be used to create custom versions of avatars
The tool can be found it Unity at: TohruTheDragon/AvatarFork
You can try to fix your avatar with this tool, if the mesh exploded, after you overwrite the FBX outside of Unity
Copy entire controllers, with all animations also duplicated, and reassigned to the controller
Make a unique copy of an avatar's entire menu (and parameter list), along with the icons
Find menu items without icons, and with icons that have already been used elsewhere in a menu
Copy the materials used by the avatar, along with the textures if needed, which are then reassigned in the materials
Take all dynamics (physbones, physbone colliders, contacts) from the armature, and put them at the avatar's root
Or copy all dynamics to another copy of the same avatar, no matter if the dynamics are in the armature or not
Note: The second image shows the prepare screen just before the copy. There is a second avatar selection screen before
Organize your animator parameters easier, with multi-select, drag and drop, and other sorting methods
Find what properties are not animated in animations, that are animated in other states
Check the priority of animated properties
Find all blendshapes, that are only animated in your reset animation, and all blendshapes that are not animated in the reset animation
Get the latest release here: Link
Or download it via VCC: Link