Actually...
Whe Jacques Roach was on JHAS (Jim Henson's Animal Show) his name was Yves St. La Roach. They even made a female version named Yvette the Roach.
As for the suggestions made by Harvey Towers... I'd hesitate adding the Swedish Chef, Rowlf, Robin, Bean Bunny, Gonzo and Rizzo, the Electric Mayhem, Lew Zealand and Sweetums. Why? Because, even though they were dressed in pirate garb, they were still themselves. Gonzo from MTI is still addressed as Gonzo. That's why I treat the Cabin Boy figure of him as a variant and not a figure of another family member acrewed towards the family members immortalized in action figure form totals.
This differs from Kermit or Fozzie, cause even it was plain that it was Kermit or Fozzie in the role they were playing, they were playing a role that wasn't named Kermit or Fozzie. Kermit was Captain Abraham Smollet and Fozzie was Squire Trelawney. So, I'd tend to leave those off the list if they were just themselves in piratical clothing.
However, the rats are certainly up for inclusion... Just not sure under what entry heading though.
Hope this helps.