Guide on adding a new model, animation, and creature to HoMMV

There could be several solutions: - The model is missing a skin modifier that is "bound" to a Bone.

I think so, it's missing. This is an archangel ripped from the game, his sword has been removed, and he's being re-introduced into the game. Essentially, it's a new mesh. And it clearly doesn't have its own bones, or at least that's what I think.