The Circle of Eighteen was a group of sorcerers, which opposed The Lady's power. Some of them were killed, while others were converted into her loyal servants – The Lady's Taken. In the end the leaders of the rebellion and their immense armies were eliminated at the Battle of Charm.
Some of them were never encountered by Croaker and were not mentioned by name. The members of the Circle changed as some were killed and others were brought in to replace them. It is unknown whether the new members of the Circle were sorcerers as well. The known leaders were: