Zax is simple but very powerful 3d character for complex animations. Xpresso rigged, sliders control for the eyes, bend deformer rig for the neck. One cool alien droid “ROBOT” based on idea, from very nice old movie called “Benji, Zax & the Alien Prince” (1983) – Tutoral video in Youtube: https://youtu.be/L4jfJZzSHjM