Hi, I'm about to return to playing CotCT, but the GM has an NPC that has become 'part of the group', complete with taking treasure and XP. It wouldn't be a problem, but the NPC is completely out shining the PCs in combat, and since we already have a party of 5 sometimes 6 our XP share is already very low. The GM is also using the character to block out some 'questionable' acts because he knows what is around the corner e.g. stopping the rogue from finding the stash of treasure hidden by the boars in book 1.
Any advice on how to approach the issue? Has anyone had a similar problem before?
Cheers, Cainegm