Seo Dong-hyeon (Korean: 서동현; born June 2, 2003),[1] better known by his stage name Big Naughty (Korean: 빅 나티; stylized as BIG Naughty), is a South Korean rapper. In 2019, he released his debut single "Where It All Started Remix" (Korean: 시발점 Remix; RR: Sibaljeom Remix). In 2021, he released his first EP Bucket List.