Hey hey. I went back and built a new Air Elemental model, then realized I never posted the Earth ele!
Take a look :)
Keep in mind these are differently scaled versions of the elemental skin. Just like with the player's squad members, each unit has a variety of sizing attributes. The various types of elemental have the same parameterization. So yeah, that last one's kinda funny :)
Oh oh, and the Stone and Air bits animate; I didn't record a GIF for you though. Next time.