turning a character with skinned mesh renderer into a regular mesh renderer

I have a skinned mesh character that I have posed, but the character will remain totally static throughout my game. I’m wondering if there is a way to optimize my scene by converting that skinned Mesh renderer into a standard static mesh?

You can add a Mesh Renderer through the Add Component menu. You may need to add a Mesh Filter also to actually drag-and-drop the mesh you want to use.
You may find, however, that your model becomes stuck in Frame 1 pose.

The difference between the two (MR and SMR) is that Mesh Renderer is for non-rigged and SkinnedMR is for Rigged characters. I have a multi-part model. The parts with Bones use SMR and the bits without bones use MR.