Mad Movies Classics had been set up as a Works which it definitely isn't.
Not sure whether to treat it as a Periodical Title or Publisher Series: https://www.bookogs.com/credit/697571-mad-movies-classics For the time being I have made it a Publisher Series, but I will change it if need be.
Mad Movies is a French magazine: https://www.bookogs.com/credit/592481-mad-movies
My French is not that great, but I believe "hors-série" means literally exceptional series (which I assume means that it is a special series). This is the website for these magazines: https://shop.mad-movies.com/fr/famille/2/mad_movies_hors_series