On
| Stage Name | On |
| Full Name | Choi Ju Hwan |
| Country of Birth | Korea |
| Date of Birth | Oct 16, 2002 |
| Age | 20 years old |
| Height | 1.78 m (5'10") |
| Weight | 59 kg (129 lbs) |
| Blood Type | A |
Not Ranked
Group
Biodata
Choi Ju Hwan (최주환; born Oct 16, 2002), better known by his stage name On (온) is a South Korean singer and a member of the Kpop boy group T1419 under MLD Entertainment. On made his debut with T1419 on Jan 11, 2021 at the age of 18.
Profile
- Stage Name: O
- Full Name: Choi Ju Hwan
- Korean Name: 최주환
- Country of Birth: Korea
- Birthday: Oct 16, 2002
- Height: 178 cm (5’10”)
- Weight: 59 kg (130 lbs)
- Blood Type: A
- Zodiac: Libra
Group
Fun Facts and Trivia
- Age trivia: On was 18 years old (international age) when he debuted with T1419.
- Role model: Jungkook from BTS.
- Code name: T07.
- Training time: 2 years.
- Role model: Jungkook (BTS).
- Favorite color: black, white.
- Hobbies: writing and composing music, watching romantic movies.
- MBTI: ISFJ.
- Specialty: Japanese, dancing, and visuals.
- On and Gunwoo joined the company only 2 weeks apart.
- He thinks his face (looks) is his specialty.
- He has big hands so he wants to introduce himself as an alpaca with big hands.