Han, full name Han Ji-sung, is a rapper, vocalist and producer in Stray Kids, the South Korean group formed by JYP Entertainment that debuted in 2018. Fans often clip short English phrases from his livestreams, interviews and variety appearances because his reactions are expressive and easy to reuse. Holy moly is a long used English exclamation for surprise, and this version spread as a fan reaction sound, similar to an oh my god meme, for moments of disbelief, amazement or comic shock in edits and group chats.