Here is one of our secondary characters "Biff". We've broken down the facial expressions into small regions of the face and sculpted them digitally over the neutral face. These micro expressions are then sent to our rigger Devan Mussato who breaks these expressions into a left and right side and puts it into his rig so we have asymmetrical control over the face. We've sculpted 28 blendshapes for each of the seven characters. These poses were made by blending between just 12 of those symmetrical shapes. I'll post more work of the facial expressions as we get further into the rigging process.