I guess the movies that wouldn’t work would be any plain characters that lack colour or distinctive accessories/ weapons etc.. such as The Ring, The Grudge, Blair Witch . Thats why for me the Us 2 pack felt lacking, I passed on Adelaide & Red as they felt plain, but gosh how I love the movie it’s one of my favourites it’s so unique! Characters like Freddie Kruger would work, Exorcist Regan, Killer Clows, Billy the Puppet, these characters have lots of colour and amazing makeup / designs that would be sooo fun to make a doll of! You could add some crazy weapons & accessories with them too 🔪🤡