K-pop Boy Groups

THE SSYNDROME Members Profile: Full Names, Ages, Heights, Weights and More

June 26, 2026 | By
THE SSYNDROME members are Seok Jun Ho, Yang Hee Gyo, Do Min Kyu, Jung Ji Yeong, and Shin Se I.
OriginSeoul, South Korea
DebutNovember 27, 2025
Number of Members5
MembersSeok Jun Ho
Yang Hee Gyo
Do Min Kyu
Jung Ji Yeong
Shin Se I
Former MembersJang Min Joon
Lee Hyeok Ju
Oldest MemberSeok Jun Ho
Youngest Member (Maknae)Shin Se I

THE SSYNDROME Members Profile

Seok Jun Ho

THE SSYNDROME member Seok Jun Ho
Full NameN/A
BirthdayFebruary 13, 2004
BirthplaceN/A
Age22 years and 4 months old
HeightN/A
Zodiac SignAquarius
Chinese Zodiac SignMonkey
MBTIINFJ
PositionLeader, Vocalist, Keyboardist

Yang Hee Gyo

THE SSYNDROME member Yang Hee Gyo
Full NameN/A
BirthdayApril 18, 2005
BirthplaceN/A
Age21 years and 2 months old
HeightN/A
Zodiac SignAries
Chinese Zodiac SignRooster
MBTIENTP
PositionVocalist, Guitarist

Do Min Kyu

THE SSYNDROME member Do Min Kyu
Full NameDo Min Kyu
BirthdayOctober 7, 2005
BirthplaceN/A
Age20 years and 8 months old
HeightN/A
Zodiac SignLibra
Chinese Zodiac SignRooster
Blood TypeAB
MBTIENFJ
PositionBassist
Instagram@do.bby_isfree

Jung Ji Yeong

THE SSYNDROME member Jung Ji Yeong
Full NameN/A
BirthdayJune 22, 2006
BirthplaceN/A
Age20 years old
HeightN/A
Zodiac SignCancer
Chinese Zodiac SignDog
MBTIISFP
PositionVocalist, Drummer

Shin Se I

THE SSYNDROME member Shin Se I
Full NameHwang Jin Seok
BirthdayOctober 10, 2006
BirthplaceN/A
Age19 years and 8 months old
HeightN/A
Zodiac SignLibra
Chinese Zodiac SignDog
Blood TypeA
MBTIENFP
EducationLila Art High School
PositionFirst Guitarist, Maknae

Former Member Profile

Jang Min Joon

THE SSYNDROME former member Jang Min Joon
Full NameN/A
BirthdayJune 1, 2005
BirthplaceN/A
Age21 years old
HeightN/A
Zodiac SignGemini
Chinese Zodiac SignRooster
MBTIENFP
PositionVocalist, Bassist

Lee Hyeok Ju

THE SSYNDROME former member Lee Hyeok Ju
Full NameLee Hyeok Ju
BirthdaySeptember 29, 2007
BirthplaceN/A
Age18 years and 8 months old
HeightN/A
Zodiac SignLibra
Chinese Zodiac SignPig
MBTIENFP
PositionVocalist, Maknae

Member Ages: Oldest to Youngest

MemberBirthdayAge
Seok Jun HoFebruary 13, 200422 years, 4 months, 13 days old
Yang Hee GyoApril 18, 200521 years, 2 months, 8 days old
Do Min KyuOctober 7, 200520 years, 8 months, 19 days old
Jung Ji YeongJune 22, 200620 years, 4 days old
Shin Se IOctober 10, 200619 years, 8 months, 16 days old

FAQs

How many members are in THE SSYNDROME?

THE SSYNDROME is a 5-member K-pop boy group. The group consists of Seok Jun Ho, Yang Hee Gyo, Do Min Kyu, Jung Ji Yeong, and Shin Se I.

When did THE SSYNDROME debut?

THE SSYNDROME debuted on November 27, 2025, with their single ALIVE.

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