When an avatar is dequipped the DequippedLabel contents will be written to the LabelTargets, by default the DequippedLabel is "---".
Examples
By default a user's Name Badge will contain a AvatarNameTagAssigner connected to TextRenderer, TextUnlitMaterial, and a ContactLink. The user's username will be written to the TextRenderer, their default Name Badge colors will be written to the TextUnlitMaterial, and their UserId will be written to the ContactLink.