- Full name: Kim Dong-yeong
- Date of Birth: February 1, 1996
- Nationality: Korean
- Blood type: B
- Group: NCT, NCT U, NCT 127
- Agency: SM Entertainment
- Debut: 2016
- Position in the group: main vocalist
- Family members: Mom, dad, older brother, Doyoung
- Nickname: ‘Docomong’,’Rabbit Prince’, ‘Doggang’, and ‘Udong’
- Doyoung’s older brother is a Korean actor, ‘Gong-myung’
