Sin has race-less white skin with long, mildly wavy, platinum blonde hair with a tint of mint green her bangs are straight cut and swept to the side, there is a white flower with green leaves on her head as well as her right sleeve. She has red eyes. Strung around her neck, a large golden key resides. However, it is unknown where it goes to or unlocks. She wears a long white turtle neck dress, with ruffles on the bottom and where the lining of the sleeves are yellow with a frilly green cape and a large bow of the same color. Her bottom half is composed of an olive green serpent body with the under side being light brown.
Not much is known about Sin's personality (as she has not appeared in any stories as of yet), other than she is kind and extremely loving. She accepts her wife's relationship with Lzet, stating, "it is understandable to love more than one person."
Not much is known about her.
Sin's wife and lover. It is heavily implied that the two are extremely close with one another.
Her son. The two are very close.
- Sin may be based off the serpent from the Bible that deceived Eve into eating the forbidden fruit.
- She is commonly associated with flowers.
- Her name means "an immoral act considered to be a transgression against divine law." which is commonly used in the Bible to proclaim an unlawful act against God.
- Sin is also a Thai name meaning "money".