First Name: Ji Sung
Family Name: Han
Native name: 한지성
Nationality: South Korean
Gender: Male
Born: September 14, 2000

His stage name was 'Jisung' but he changed it to his surname, 'Han.' He was a participant in the JYP Entertainment and Mnet’s new boy group survival program is titled “Stray Kids.” He used to live and study in Malaysia. He trained for 3 years. He used to train at D.E.F Academy. He is in pre-debut group 3RACHA with Chan and Changbin. His stage name in 3RACHA is J.ONE.