I have watched the categories, and found that there are several problems:
- In Category:The Most Powerful Villains in History, the standard "Using lethal force against the universe" is not suitable to "real life villains" since the human beings are mostly in the earth.
- Since there are countries which do not use the title and "Category:Head of State" may be more suitable rather than Category:Presidents.
- Category:Mentally Ill should not be added to someone who simply holds highly controversial ideologies such as "totalitarian politicians".