Mesh combine for dynamic objects?

Hi guys, I am currently making a defense game.

I am trying to apply mesh combine for heros or enemes that are being spawned during the game play.
I understand how I could combine the meshes for static objects such as map, but I am curious of how to combine meshes for dynamic objects. Could someone please tell me the way to do it?

Thanks in advance!

 

In exactly the same way.

But if you intent to combine several individual enemies, this won‘t work. They would be forever locked at their initial relative positions and rotations to each other. It will work if your intention is to mesh combine a particular type of enemy that is modular, ie it may have different legs, torso, head or attachments like weapons and armor.