Kevin Moon, born Moon Hyung Seo (문형서) is a South Korean-Canadian singer-songwriter and a member of the K-Pop boy group THE BOYZ.

Before joining THE BOYZ, Kevin showed early musical talent, playing piano and guitar, and was active in his school’s choir. He initially gained some recognition by competing on K-pop Star 6 in 2017. Shortly after, he was recruited by IST Entertainment and debuted with THE BOYZ in the same year.

On July 9, 2021, Kevin released a solo song titled “rubber boots” on SoundCloud. In 2022, he released “604.”

In 2026, Kevin made his mainstream solo debut on September 2, 2026 with the single album FREECHILD. The single album was released independently without label support.