Wong Yukhei (黃旭熙) —read as Huang Xuxi in Mandarin Chinese—, born January 25, 1999, and better known as LUCAS (루카스), is a South Korea based Hong Kong performer of Teochew and Thai ancestry. LUCAS was the lead rapper, sub-vocalist, visual, center, and face of the group of K-pop group NCT and its sub-units NCT U and WayV. Since 2019, LUCAS has also been part of SM Entertainment’s supergroup SuperM.
In April 2017, LUCAS was introduced as part of SM Entertainment’s pre-debut training team SMROOKIES, and in the same month, he was featured in TEN’s music video for “夢中夢 (몽중몽); Dream In A Dream,” released as part of SM Entertainment’s S.M. Station project. He officially debuted in 2018 as a member of NCT with NCT U’s promotional single “BOSS.” On January 17, 2019, he debuted in NCT’s China-based sub-unit WayV with “理所当然 (Regular).” In October of 2019, LUCAS was announced as a member of SuperM and debuted with the title track “Jopping.”
On August 25, 2021, before making his debut as part of WayV’s third sub-unit with the song “Jalapeño” alongside WayV member HENDERY, LUCAS temporarily halted his activities as an idol due to controversy arising surrounding his past relationships, postponing the release of the song and future promotions for it. After 2 years of inactivity, in April of 2023, it was announced that Lucas has parted ways with NCT and WayV and will continue as a solo artist.