- Stage name: Heeseung (희승)
- Real name: Lee Hee Seung (이희승)
- Date of birth: October 15 , 2001
- Position: Leader, vocalist, dancer, rapper
- Zodiac sign: Libra
- Height: 179 cm (5’10”)
- Weight: –
- Blood group: A
- Nationality: Korean
- MBTI: INFJ
Fact interesting about Heeseung
- Training period: 3 years 1 month.
- His ideal role model is his father.
- As a trainee of BigHit, currently BELIF+.
- If I were the male lead of a movie, I would choose a Japanese romance movie.
- In episode 1 of I-LAND performed “Boss” (NCT U).
- Có mối quan hệ thân thiết với các thành viên TXT.
- Ranked 5th in I-LAND with 1,137,323 votes.