Harry Potter Digis

[Mothership]

I like these, just about the right amount of cute involved http://www.pixieduststudio.net/category_34/Harry-Potter.htm

[icebubble]

I've seen those and they are cute and I believe they also had a Twilight set. I have no idea of the law of these things but how do they get away with copying the characters and even calling them by the correct names and not infringing copyright somehow?