Fabio uses the 13th Maxis face template in Create a Sim, except the ears and nose which use the 6th face template. Also the jaw is longer than on the default face. However the jaw is only longer on teenage, adult and elder females, which may mean that the jaw was genetically passed down, as this oddity generally only occurs on Sims whose facial features were genetically passed down. Strangely, Fabio has memories of his parents getting engaged and married, despite both parents having memories of doing this before Fabio was born. This was probably an oversight by the developers.