ACE Members Profile and Facts
ACE (에이스/ エース) was a South Korean pre-debut boy group under HO Company, consisting of Yoonchan, Changgyu, Doeun, and Joker. The group was first introduced on December 16, 2015, and began Japan promotions on January 13, 2016. They quietly disbanded sometime in the first half of 2016 after concluding their Japan activities.
Group Name Meaning: N/A
Official Greeting: “2, 3, Hello, we are ACE!” (둘, 셋, 안녕하세요, 에이스입니다!)
ACE Official Fandom Name: N/A
Fandom Name Meaning: N/A
ACE Official Color: N/A
ACE Official Logo:
Official SNS:
Instagram: @ace_official_kr
X: @ACE_Official_KR
ACE Member Profiles:
Yoonchan
Stage Name: Yoonchan (윤찬)
Birth Name: Yoon Hee Chan (윤희찬)
Position(s): Leader, Vocalist
Birthday: January 18, 1993
Zodiac Sign: Capricorn
Chinese Zodiac Sign: Monkey
Height: 176 cm (5’9”)
Weight: 73 kg (160 lbs)
Blood Type: A
MBTI Type: ESFJ
Nationality: Korean
Instagram: @heechan0118
X: @heechan2022/ @ACE_YOONCHAN
YouTube: HeeCHAN희찬
Tiktok: @heechan.yoon
Yoonchan Facts:
– He is currently a member of WeNU (2022-present) under his given name, Heechan (희찬).
– He made his solo debut on July 18, 2014, with the single “It’s Me”, through the M Junior Dreamer youth development program.
– Yoonchan appeared in episode 9 of I Can See Your Voice 5 (2018) together with X-BOYS‘ Park Jin.
– He competed in Oppa’s Generation (2023), where he ranked 6th.
– Since high school, he auditioned over 1,000 times and spent 10 years training before making his debut.
– He appeared on the variety show AM Plaza (2025).
– He has completed his military service.
– In 2019 he won the Grand Prize at the 89th Chunhyang Festival Busking Contest in Namwon.
– He was a member of the Planning Committee for the 3rd Youth Day of Korea in 2019.
– His stage name is a combination of his surname and the last syllable of his first name.
– His favorite singer is Bruno Mars.
– Yoonchan’s most treasured item is a portrait given by a junior during his military service. It reminds him of the supportive people he served with and gives him strength to face any challenge.
Changgyu
Stage Name: Changgyu (송창규)
Birth Name: Song Sung Gyu (송성규), legalized to Song Chang Gyu (송창규)
English Name: Alvin
Position(s): Vocalist
Birthday: July 6, 1993
Zodiac Sign: Cancer
Chinese Zodiac Sign: Rooster
Height: 173 cm (5’8″)
Weight: 56 kg (123 lbs)
Blood Type: O
MBTI Type: ENFJ
Nationality: Korean
Instagram: @apnalchangchanggyu/ @white.baby___
Weibo: @UNVSchanggyu
Changgyu Facts:
– He’s currently a member of UNVS (2016-present) under the name Changgyu (창규).
– He’s a former member of F-ACE (2014-2015) under the name Changgu Ear (창구 이어), and the trainee group Hem New Boys (2013-2014) as Changgu (창구).
– Changgyu served in the military band from November 17, 2020, until May 2022.
– He got married to Hwang Ayoung (formerly of BLACKMAMBA, Die.A Project, FreezyBone, Produce 101) on April 19, 2025.
– He took part in the producing and writing of N.D.O.S‘ single “내가 널 지켜줄게”.
– Changgyu was a judge at the Taiwanese dance competition Hero 4 Who (2024).
– Education: School of Performing Arts Seoul.
– He has two younger brothers.
– He has a lot of idol friends, including former TARGET‘s Woojin, former TRCNG‘s Hayoung, AWIN‘s Ziki, former MVP‘s Gitaek and Sion, Studio L‘s Minho, CLEAUN, JG‘s Joonho, MUL‘s Shinwoo, and FTIsland‘s Hongki and Minhwan among others.
– Changgyu previously worked part-time at a café.
– He became the main vocalist of his high school band after winning against 57 other auditionees.
– Besides Korean, he can speak English and some Mandarin.
– After passing an audition and singing in front of an audience for the first time, he discovered the thrill of being on stage and began dreaming of becoming an idol.
– His nicknames are “Smiling Angel” and “Passionate Boy” .
– His hobbies are gaming, snowboarding, fishing, drumming, and playing the piano.
– Changgyu’s special skills are being able to open his mouth up to 6.6 cm and running. He completed a 10 km run in 55:28:41 minutes at the 7th Seoul Peace Marathon in 2024.
– On his days off, he enjoys spending time with his family and friends.
– His favorite type of pizza is potato pizza.
– He is known for doing a lot of aegyo and being a sociable and proactive person, with a talent for building strong connections.
– He likes to unwind by watching a movie or drama before bed.
– Changgyu is scared of bugs.
– Red is his favorite color, and he also likes black and white.
– He’s skilled at playing KartRider.
– He has a preference for sweet scents.
– Changgyu would like to try being a radio DJ one day, as he enjoys writing and reading, and would love to share his stories with an audience.
Doeun
Stage Name: Doeun (도은)
Birth Name: Kim Bok Eun (김복은)
Position(s): Vocalist
Birthday: October 12, 1994
Zodiac Sign: Libra
Chinese Zodiac Sign: Dog
Height: 177 cm (5’9″)
Weight: 58 kg (127 lbs)
Blood Type: AB
MBTI Type: N/A
Nationality: Korean
Instagram: @goyirim
TikTok: @goyirim/ @signal_bokeun
YouTube: 김복은
Doeun Facts:
– He started going by the name Go Yirim (고이림) in the first half of 2025.
– He’s currently an actor.
– Doeun acted in the K-dramas D.P Season 2, Nine Plus, and several short films.
– He a former member of E7 (2012-2013), ELVIN CREW (2017), and SIGNAL (2018-2021).
– He was formerly part of the trainee group BGC (Bokgunchang, unofficial fanmade name as the group had no official name yet) (2016).
– Doeun went by the stage name Josh (조쉬) in ELVIN CREW, while he went by his birth name, Bokeun (복은), in his other former groups.
– He was part of the duo Cynosure (2021) with AWIN‘s Dam.
– He is a former Media Records trainee.
– Doeun has completed his military service and was discharged on February 10, 2025.
– His specialties and hobbies include playing the piano, boarding, and singing.
Joker
Stage Name: Joker (조커)
Birth Name: Lee Chang Hak (이창학)
Position(s): Maknae, Rapper
Birthday: October 25, 1994
Zodiac Sign: Scorpio
Chinese Zodiac Sign: Dog
Height: 177 cm (5’9″)
Weight: 58 kg (127 lbs)
Blood Type: O
MBTI Type: N/A
Nationality: Korean
Instagram: @hak_941025/ @hihellobangabanga2
X: @ACE_JOKER_CH
TikTok: @lchanghak27
Joker Facts:
– He was formerly part of the trainee group BGC (Bokgunchang, unofficial fanmade name as the group had no official name yet) (2016).
– He has a pet cat named Lilly. In the past he also had another cat named Cherry.
– Joker is friends with the members of A.C.E, MADTOWN, and SIGNAL.
– His religion is Christianity.
– He has a tattoo under his collarbone and one on his upper arm.
– He enjoys listening to Korean hip hop music.
– Joker is a fan of Zico.
– Despite his position being rap, he’s also a good vocalist.
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Who is your ACE bias? Do you know more facts about them? Feel free to comment below!
