Crystal Darkness is the daughter of a angel pony mother and a demon pony father. Her parents are also pretty wealthy too, so she has a high taste in things like food and clothing.
She spent most of her life staying within her families home and the surrounding area, so she never had a lot of chances to socialise, until she got to her teenage years. She began to go out to the where the other ponies are, and although they where disturbed by her appearance at first, she soon made a lot of friends there, along with developing a taste in goth fashion and interests.
She also likes butterflies, and likes to study them.