1. A system for mapping facial expressions to an alternative avatar expression, the system comprising: an image capture device to capture a series of images of a face; and a processor to: detect a sequence of facial expressions of the face from the series of images; determine the alternative avatar expression is mapped to a subset of facial expressions of the sequence of facial expressions, wherein the alternative avatar expression is an exaggerated expression beyond capabilities of a human to express on a face; and animate an avatar using the alternative avatar expression and a sequence of avatar expressions based on the sequence of facial expressions, wherein the alternative avatar expression and the sequence of avatar expressions are used concurrently to animate the avatar.