Thread:Harasar/@comment-24800939-20190527185923/@comment-1487274-20190529153153

Such pages should be on the list of Special:Wantedpages, but it can display only 1000 results, ranged by number of red links, so it unlikely to find even one such category.

Other than that, I can think about only one way to get the list of such categories - use DPL queries on different categories, like Category:Character Appearances and return pages they are linked to, and then manually check them. But DPL can return only 500 results, so you would need to use more than a hundred queries just for Category:Character Appearances.