First is in control of weapons, and guarding alongside Day for the Tenebris. (All's tower)
She doesn't sleep.
She wont stand for anyone's nonsense, she's very strict with her rules, and she wont hesitate to put someone in their place if they are out of line.
She enjoys working with Day, (who by the way is terrified of her)
She likes the stars.
She works the night shift as well as Day.
She can be violent at times, but it's usually justified.