for some reason some of my charicters seem to get invisible items that cannot be removed or sold. minc has a skull that you cannot see/use but it takes up a spot in the inventory which is really annoying. anomen has a ring with no description that does nothing and cannot be removed?? what can i do?

sounds like you have used shadowkeeper. if not, download it and remove your items. problem solved.
just select your charater, click the item, then click remove.