Kin Thanachai Sakchaicharoenkul, known mononymously as KIN, is a Thai singer, guitarist, pianist and national youth ice hockey player under GMMTV. He was previously under the label White Fox, a subsidiary of GMM Music, until July 2025 when he transitioned to GMMTV. After graduating from Anglo Singapore international, he went on to study Arts in Entrepreneurial Economics at Kasetsart University's Faculty of Economics. He was a three-time ice hockey champion at the South East Asia Youth Cup from 2017 to 2019. Kin's first single, "Yu Khon Diao Man Ngao" (อยู่คนเดียวมันเหงา) was released on February 25, 2022. In addition to Thai, he speaks Chinese and English.