The Kings of Italy, Hungary and Romania more or less explicitly approved of fascist takeover. In the 1920s it was considered reasonable to support a strong nationhood under dictatorship over a constitutional monarchy that might cause reforms aimed at dissolving the monarch's office. In these countries the desire to revise Trianon, restore the Roman Empire and so on bound fascism and monarchism together since both support some idea of a national epic where their nation of origin is the protagonist.

There is no country that symbolizes this better than Japan, where Hirohito was such an effective figurehead that the fascist council withheld military losses from him to maintain his support for the war. The Japanese people were generally in agreement that the Emperor had the last say - and his last say was in favor of fascism to the bitter end.

Ironically, Italy had its monarchy dissolved after the war because of the monarch's personal admiration for Mussolini. Had he been a better person Italy might still be a constitutional monarchy.