17. The system of claim 16 , wherein at least one plurality of facial layers includes at least one of an emotion layer, a speech layer, and an eye-blink layer, wherein the respective measure of influence for each of the plurality of facial layers is distinct.
17. The system of claim 16 , wherein at least one plurality of facial layers includes at least one of an emotion layer, a speech layer, and an eye-blink layer, wherein the respective measure of influence for each of the plurality of facial layers is distinct. 18. The system of claim 17 , wherein each plurality of facial layers includes the emotion layer, the speech layer, and the eye-blink layer, wherein the plurality of facial layers for the first character and the plurality of facial layers for the second character are parameter-parallel; wherein the emotion layer represents aspects of the facial expression relating to emotion, wherein the speech layer represents aspects of the facial expression relating to speech, and wherein the eye-blink layer represents aspects of the facial expression relating to blinking, and wherein the facial layers for the second character are additively combined using the composition function and based on a plurality of weighted masks.