Fully-procedural animation. I’m using a function state machine (Playmaker) to trigger random timing on expressions and head tilts, and an IK system smooths the movement of the head, neck, and shoulders at slightly different timings.
I ended up creating an elaborate gimbal of parented rotating joints so the chin could point in one direction and the eyes another. The IK system is set up to follow the rotation of one of the gimbal joints, rather than rotating the head directly.
