Your problems are not always what they seam: combining different meshes into seamless procedural characters
Dynamic Mesh Combining in Unity with C# | Habrador
Unity Asset – Skinned Mesh Combiner MT - Character Mesh Merge, Atlasing Support & More
Grouper: Mesh Combination versus Encapsulation -
GitHub - dawid-t/Mesh-Combiner: Mesh Combiner is a little tool which can combine different meshes into one mesh in Unity for reduce the amount of batches / draw calls, making your game more
Welding vertices at runtime - Unity Forum
How to Combine Meshes in Unity - YouTube
Simple Mesh Combine | Utilities Tools | Unity Asset Store
Increasing FPS by combining meshes in Unity3D - YouTube