Will believes honestly in a lot of things that are mix of superstition and religion as that's how his world is. Since coming to Milliways, he's seen real magic but he knows that there are things in Sherwood he doesn't understand and that the Church has power.

Charles is a scientist and a man of reason who is something that many people think can't be real. He knows a lot about superstition as it fuels fears about mutants and psychics and he likes knowing what he's going up against. Though he does have a few little rituals he does because they were talk to him at a young age such as throw salt over his shoulder.

Sameth is from a world with magic in it but one that has created supertitions in Ancelstierre because its not fully understood. To him it all exists together.

Moist is from the Disc where its better to be safe with the gods and luck. He doesn't go out of his way to do various good luck or bad luck things but if it makes sense, he will.

Jane sees herself as above superstition though she does have a few rituals for her writing.

William has a few little rituals he does that he wouldn't define as superstitions like checking that Mark's breathing or not reading the paper until all his chores are done. He started doing them during the War and when Mark was first sick and now they are there for him.

Tumnus isn't really superstitious as Narnia is magical and I don't know, it doesn't fit him.

The Pirate King is superstitious but not as much as some of his pirates and he knows and understands what they believe.

I am a fair bit, I toss salt over my shoulder and look for patterns out in the world.