This is my entry for the Artakha canon contest, he features a working gear function, and as well as the joints you would expect such as shoulders, knee’s, elbows etc. he has some more unusual articulation including; Waist articulation (rotation and ab-crunch) Ankles, and articulated hands. (note the Hau is a placeholder as I do not posses an appropriate mask or the parts to create a brick built one)
Gearbox breakdown
