probably because kids don't care about animatronics. Garner Holt stopped making the 16 movement and 32 movement bots (which are the bots on the small round stages) (the studio c alpha,beta,cappa,alpha/beta mix and the beta/cappa mix) Since the eye rolled in the back of chucks head (if the eye is completely white) the paint might have chipped off of the eyeball, the animatronic might be a cyberamic or a 3-stage bot since they are known to break easily. Cyberamics are normal speed animatronics but they are extremely fragile and old. 3-stages breaks because they are fast moving animatronics with all these crazy and wild movements, such as arms flailing or heads rapidly turning back and forth