Siân appears as very pretty on the outside, with a certain ugliness on the inside. Her hair glistens like a ginger fox's fur under a torch, while her eyes are as green as shining emeralds. She's of average height and weight.
Siân, born in a priveliged lifestyle and constantly neglected by her parents, is surprisingly intelligent, cynical, bitter, shy, hot-tempered and arrogant. She is a borderline sociopath, not considering the feelings of others and almost socially detached. She is not completely resilient, with strong levels of self-pity and guilt. She is home to perpetual regret for her sister's death and the fact that her parents neglect her for it. She has a hot temper, as shown when she is offered help and prefers independence.