Kim Yu-bin, referred to as Yubin, is a South Korean singer-songwriter, rapper and actress. Kim is a founder and CEO of the entertainment agency RRR Entertainment. She initially rose to fame as a member of South Korean girl group Wonder Girls, formed in 2007 by JYP and active with the group until disbanded in 2017. She made her solo debut in 2018 with the single "Lady", and has continued to release music ever since.

Wonder Girls (Korean: 원더걸스) was a South Korean girl group formed by JYP Entertainment. The group debuted in February 2007 with the single "Irony" and 5 members: Yeeun, Sunye, Sunmi, Hyuna and Sohee. After Hyuna's departure in July, Yubin was added into the group prior to the release of their debut studio album, The Wonder Years (2007). The album spawned the hit single "Tell Me", which topped various South Korean music charts.