Lucifer + Lilith

Their mother was part of a cult, hence their names and how poorly they were treated in their youth. From the moment they were born they were always together in bad situations so they developed dependent personality disorder (DID). Their power is the ability to go between each other's minds. They are able to communicate and even "jump" into the other's body to take it over though Lucifer does it far more than Lilith.

Lucifer: Brown hair and brown eyes. He's quiet and thoughtful. He waits to see a situation unfold before acting. A pessimist and very pragmatic. Isn't the type to put himself in harm's way or go out of his way to help someone unless it benefits him. An avid reader that likes the quiet and to have plenty of time by himself. He also likes watching how others interact. Dislikes are loud noises, his sister being mentioned once they are separated and their mother.

Lillith: Brown hair and brown eyes. She is always quiet, in the shadow of her brother, but it doesn't bother her. Once they get into the organization and Lucifer starts to get more controlling she goes through an identity crisis. She cuts her hair, loses weight, starts wearing glasses and dresses like her brother instead of the baggy clothes she used to wear. Even when her brother starts pushing her away she would do anything for him because when they were younger they were all they had. She tends to follow him around like a lost puppy more often than not unless she has some task to do herself. She likes fantasy stories even though they make her sad and baggy clothes, even when she doesn't wear them anymore. Eating makes her happy because when they were younger they didn't have much. She dislikes their mother, comments that she needs to leave her brother, being separated from him, and having to make decisions.