Hi JenCat and welcome to Muppet Central. May I say it's nice to have a legitimate new member who brings a bit of excitement for the Muppets amidst all the spammers lately.
As for your question... There was a campaign by a former forum member to attempt and get a prototype from Ken Lilly, Director and Product Developer for the Muppets figure line... The plans were to then make copies of that figure for every forum member who contacted him, was interested in a copy, and could pony up the money for the endeavor. But that pipe dream fell by the way side. There was a prototype of Sal Minella that was sold on eBay, unfortunately I got snipped at the last second, as it sold for $1200 to another forum member by the name of MuppetNut. The only thing I can suggest in the way of anything even bearing Sal's likeness is the photo included with one of the three Johnny Fiama figures. Other than that, you'd probably have to search Muppet Wiki.
Hope this helps, and have fun exploring the rest of the forums.