Yes, but Thomas' face isn't really a face - it's two eyes, a nose (sorta) and a mouth.

http://4.bp.blogspot.com/_bz_jjvcbEUc/RtIgHtuZoXI/AAAAAAAAACc/5cy9pr9E9Yw/s320/thomas_tank_engine.jpg

I would say this could be done in NURBS without too many problems. Try a picture of the face from each perspective - maybe buy a Thomas toy and use this for your reference pictures?