Picture number 2 is Hello Kitty dressed as a devil for Halloween and she is standing behind five small Jack O Lanturns.
Picture number 3 is Hello Kitty and her friends trick or treating. Hello Kitty is a devil, Choco Cat is a mummy, the penguin who's name I don't know is a ghost and the character behind Choco Cat is a little clown.
Picture number 4 is Hello Kitty dressed as a witch along with her teddy bear friend that is dressed as a little devil.
Picture number 5 is Hello Kitty as a witch flying in the air with her broom.