Blender Tutorial - Joining Armatures and IK Constraints - YouTube
Parenting mesh to bones in Blender throws off the mesh's orientation after exporting to .babylon - Content creation (3dsMax, Maya, Blender, glTF) - Babylon.js
How To Merge Objects In Blender | The Motion Tree
Diffeomorphic: Corrections Section
BLENDER 2.4] Armature hierarchy issue - Character & Animation - Epic Developer Community Forums