Before using CGI to create Jabba’s announcers, masks were considered. This is what Fode would have looked like without CGI.
It seems that although Scott Capurro portrayed this early version of the Jabba’s announcer’s heads, later in the final cut he voiced the other head named Beed, rather than Fode.

063-Scott Capurro-Original Fode

More about Scott Capurro and his involvement in Star Wars here: http://starwars.wikia.com/wiki/Scott_Capurro