Sin is a peguma, and as such tends to come under the title of a legendary beast. As such, she'll take up post within the Night Watch on occasions when she feels they're in need of a woman to take some control.

She is an elegant and graceful individual, but she is poised to attack when necessary (and only when necessary). She is also a very proud individual who does not like to be trifled with, and trying to personally attack her will result in anger, unless she decides to take the other route of flying away to seethe.

She can be playful to those she knows, but often speaks with riddles on her mind. It can be hard to judge whether or not Sin actually likes you at first, and it's only when you take the time to get to know how she is as an individual that you begin to understand what signals she'll send for being friendly, and which ones to avoid.