Seo Dong-hyeon, known professionally as Big Naughty, is a South Korean rapper and songwriter. He first garnered attention when he appeared on the rap competition TV show Show Me the Money 8 in 2019. He signed to H1ghr Music where he released the extended plays Bucket List (2021) and Nangman (2022).

The eighth season of the series Show Me the Money, known as Show Me the Money 8, premiered on July 26, 2019 and ended on September 27, 2019. It is broadcast every Friday at 23:00 (KST) on Mnet.