You can find the Unreal Engine mannequin components at the following locations in File Explorer:
C:\Program Files\Epic Games\UE_5.1\Templates\TemplateResources\High\Characters\Content\Mannequins
The Skeleton is found here:
C:\Program Files\Epic Games\UE_5.1\Templates\TemplateResources\High\Characters\Content\Mannequins\Meshes\SK_Mannequin.uasset
The male Skeletal Mesh is found here:
C:\Program Files\Epic Games\UE_5.1\Templates\TemplateResources\High\Characters\Content\Mannequins\Meshes\SKM_Manny.uasset
The female Skeletal Mesh is found here:
C:\Program Files\Epic Games\UE_5.1\Templates\TemplateResources\High\Characters\Content\Mannequins\Meshes\SKM_Quinn.uasset
To note:
- SKM stands for “Skeletal Mesh”.
- SK stands for Skeleton
Here’s a bit more information: How to find Unreal Engine mannequin – Information