How do i create a facial rig like on one in this video

i am trying to create a minecraft rig with a pixelated mouth like the one in this video but i don’t know how plz help

Looks like using shape keys is a good approach:
Shape keys

I think the problem with the shape keys would be that it would move the textures with the mesh… or maybe if the textures are projected instead of UV map.
Since the animation of the faces are very snappy, maybe just create a few mouth shapes and with a simple setup, you can have them being hidden or visible… a little bit like stop motion animation. :slight_smile:

what exactly would i have to do to create a setup like that