Personality:She have 40D personality that can change anytime.Since she is a leader she learn a lot from other leader in SM also from her older brother .  Never cried in front of her member she always think that she is the group guardian.She always take care of her member first before she think for herself.Altough she's not the oldest she try to understand her unnies too.If she can't hold up herself again she will run from dorm just to cried and hanging out.She will completely change in front of her family.She don't like to act cute but when someome ask her she will do very cute aegyo.She likes suho/kris ( in case back up lovers) but she's to obvious when she likes someone that's her charms .  .Loves to eat anything that she can eat.She is a really bright light for Stella.She is the Park Chan Yeol+Byun Baekhyun+Chen of Stella .She loves to watch cartoon in loud volume and that annoy her member a lot.She always gone and pops out anywhere without her member knows that why she got yulyeong as her nickname.She really loves to play instrument her fav is Guitar and piano.