S.I.S Gaeul Profile
- Stagename: Gaeul (가을)
- Surname: Choi
- Firstname: Choi Moon-jo
- Nationality: Korean
- Birthdate: August 12, 1998
- Age: 21 (International), 22 (Korean)
- Western zodiac: ♌ Leo
- Chinese zodiac: Tiger
- Height: 167 cm (5 ft 5 in)
- Weight: 49 kg (108 lbs)
- Bloodtype: A
