How do i use nurbs for rigging like in this rig

i am trying to make a minecraft rig but i want to know if its possible to use nurbs for the mouth like in this rig http://prntscr.com/5oaeg2

This needs to be in the modelling forum

Do you mean using NURBS curves for the controls? If so, that’s not how it’s done in Blender, unlike in Maya. Is this what you’re referring to?