Cai Xukun, also known by the mononym Kun, is a Chinese singer-songwriter and actor. After participating in the first and second seasons of the Chinese reality show Super Idol, he joined boy group SWIN and its sub-unit SWIN-S in 2016. He rose to fame in 2018 with iQiyi's talent show Idol Producer, where he finished first and formed the temporary boy group Nine Percent, before pursuing a solo career. He was a cast member of the variety show Keep Running from 2020 to 2022.