No, this is not possible. All of the Plotagon characters use the same rig (digital skeleton), so the faces, hair, makeup and all the clothing and accessories are designed to work specifically with that rig. Additionally, the moviemaker automatically directs characters to look at each other’s faces at the same height.
There are other ways to add variety to your characters. Some of the faces are a little heavier than others, and you can change the tone of the digital voices to suggest different ages. We also sell a number of child digital voices.