Sorebones

Sorebones are the surgical Zombie pirates under the command of the evil and short surgeon Mi-Gor. After the player defeats Barrelchest, the monks inform the player that they have escaped with Mi-Gor back into the ocean. Their name seems to be a parody of the term "sawbone", a title given to surgeons.

Habitat
Sorebones can be found in the church on Harmony Island. They must be fought during The Great Brain Robbery quest in order to collect the components needed for Dr. Fenkenstrain. The Sorebones get replaced with Barrelchest by the end of the quest, but they reappear after the quest is completed.

They also drop the Zombie bone used in the Rag and Bone Man wish list.