I also stumbled across this article from the Muppet Mindset; https://muppetmindset.wordpress.com/2010/12/28/interview-with-muppeteer-gabriel-velez/. It listed who auditioned at Disney to understudy for each of the main muppet characters Kermit-Artie Esposito, John Kennedy, Drew Massey, Gabriel Velez Miss Piggy-Michael Lisa, Tony Whitten Fozzie-Gabriel Velez, Victor Yerrid, David Stephens Gonzo-Brett O'Quinn (also did Bunsen Honeydew) And Mo Frackle, you are probably right that Gonzo will go to Brett over Drew. I've also wondered why on Robot Chicken that Drew Massey did Fozzie when Victor Yerrid (working with him on Robot Chicken) Fozzie on Muppets Ahoy!, while Victor got Kermit, which Drew had auditioned for. I'm guessing Victor got Piggy on Muppets Ahoy! even though he never auditioned was to keep the number of puppeteers at a minimum.