If you've got M3, all his morphs should work with the Freak, so that provides a full range of expressions and facial morphs. I'm not sure, but somebody who does not own M3 might be able to buy the Freak and the M3 morph sets, without purchasing M3, to get a fully expressive Freak. The Freak morphs are specifically set up to work with Freak and add monster looks and such; Orcs, Goblins, etc.