Cai Xukun, better known as Kun, is a Chinese singer-songwriter, dancer, actor and rapper. He debuted as a member of SWIN and its sub-unit SWIN-S on 2016, after participating in the first and second seasons of the South Korean-Chinese reality show Super Idol. After leaving the group and its company Yihai Entertainment, he participated in iQiyi's reality survival show Idol Producer, debuting as the leader/center of C-Pop group Nine Percent, on 2018.
