September 13th is Stephanie's birthday, and she has a strong emotional nature that makes it difficult for her to conceal her feelings. She holds a deep affection towards her grandfather, who was once the king, and becomes enraged when people refer to him as a fool. Additionally, Stephanie cherishes her kingdom and the world around her, and is confident in the abilities of humanity.
She fell in love with Sora due to the pledges forcing her to, and she often has violent outbursts to try to break free of it.Though, highly educated and intelligent, she isnt very good at playing games, shown early on when she lost to the two siblings and is forced to obey their whims.