First Name: Young Ho
Family Name: Seo
Native name: 서영호
Also Known as: Seo Young Ho;John Seo
Nationality: American
Gender: Male
Born: February 9, 1995

Johnny (born: Seo Young Ho) is a Korean-American singer and member of the boy group NCT, and its sub-units NCT 127 and NCT U. Johnny was born in the US to Korean parents. He was accepted to SM Entertainment through the SM Global Audition in Chicago on September 2007.