"Step out! Hello, I'm Changbin!"
Seo Chang-bin (서창빈) is a South Korean rapper, lyricist, singer, and music producer under JYP Entertainment. He is the main rapper of the boy group STRAY KIDS and its sub-unit 3RACHA togther with Han and Bang Chan.
Changbin debuted as a member of Stray Kids on March 25, 2018 with the mini album I Am Not.