Wong Yukhei (Chinese: 黄旭熙) known by his stage name Lucas (Hangul: 루카스) is a Chinese-Thai rapper and model born in Hong Kong on January 25, 1999. He was one of the rappers on NCT U and was part of the main rappers, lead dancers, and sub-vocalists on WayV. In 2019, he debuted in the Kpop supergroup SuperM.