Watch the non-main characters in any recent animated Disney film for the same effect. They're almost stationary, occasionally blink, have blank looks on their

Watch the non-main characters in any recent animated Disney film for the same effect. They're almost stationary, occasionally blink, have blank looks on their faces, and, if they're the focus of your attention, look _completely unnatural_. (Source: Parent of small children who started to look at anything else in a scene of Frozen after the 10th time.)