I was thinking more that it was an expression of great intelligence. Looking into that eye and it felt like a living, breathing, intelligent being.I tried to give him a very neutral expression - in different lighting and from different angles, he can look angry, serene, serious, happy... I figure any more permanent expression anyone might want can then be sort of baked in and reinforced with the paint job.
I was thinking more that it was an expression of great intelligence. Looking into that eye and it felt like a living, breathing, intelligent being.