So in your fictional world, what would be their favourite stories? Who would be their heroes and heroines? Are they based on fact or are the stories completely invented? (Part of my fascination with the Robin Hood tale is that it is possible this is based on fact - though there are arguments just as to where Robin came from and who exactly he was based on. My own view is that it is highly likely he was nobly born, given the training in fighting someone of that background would have had. I think a Robin from a humbler background would not have been such a capable fighter but the lovely thing with this story is whatever side of the fence you sit on here, there is still a wonderful story to enjoy!).
How do your character's favourite stories affect their lives? Do they try to be like their heroes and heroines? (From a villain's viewpoint, their hero would be what most of us would consider the legendary villain. They'd definitely be cheering for the Sheriff of Nottingham if Robin Hood was a tale on their world!).