Animation Patcher
Many animations use a Jaw Close value of 0. Sidekick and many other character models need a value of 1 for a closed mouth. The Animation Patcher updates supported animation clips so the jaw stays closed.
Open it from:
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Tools > HeroBridge Standalone > Animation PatcherYou can drag in one Animation Clip, choose a folder, or select Patch ALL to patch every supported animation. The default property name is Jaw Close.
Select Patch Animations for the current selection or Patch ALL for every supported clip. The patch inverts the property value, so running it a second time restores the original value.