@Deviant Never said they had to be the same as what they're mapping it to. I said that the names are not being detected properly for VRChats system because they're completely differently named from regular avatars. Check out an actual avatar meant for VRChat, or even a booth avatar. 2 different skeleton bone names, but still both valid for VRChat. I've never tried renaming them in unity, so I wouldn't know. I also don't mess with the bones of avatars period. I leave them as is. (I only make avatars with proper rigging and bone names).