AmbiO Members Profile and Facts
AmbiO (엠비오), also stylized as AMBIO, is a 5-member South Korean boy group under E Entertainment. The group consists of Tetsu, Jeesoo, Ruone, Kiwon, and Seungsang. They released their first pre-debut single “Runnin” on September 27, 2025, followed by “I Wish” on October 27, and their third pre-debut single “Click” on November 27, 2025. They officially debuted on March 18, 2026 with their first mini album, Boys be Ambitious.
Group Name Meaning: AmbiO is derived from the phrase “BOYS BE AMBITIOUS”. It carries the meaning of “a group that delivers messages of challenge, courage, and hope for the future to youth.” Based on each member’s individuality and talent, they complete a unified teamwork while expressing their continuous growth and passion for higher goals through music and performance.
Official Greeting: “(two, three) BOYS BE AMBITIOUS! Hello! We are AmbiO!”
“(둘, 셋) BOYS BE AMBITIOUS 안녕하세요, AmbiO입니다!”
AmbiO Official Fandom Name: N/A
Fandom Name Meaning: N/A
AmbiO Official Color: N/A
AmbiO Official Logo:
Official SNS:
Facebook: @AMBIO.official
Instagram: @ambio_official
X: @AmbiOofficial/ @AmbiO_members (Members)/ @AmbiO_japan (Japan)
TikTok: @ambio.official
YouTube: @AMBIO_official
Mnet Plus: AmbiO
AmbiO Member Profiles:
Tetsu
Stage Name: Tetsu (테츠)
Birth Name: Guo Wun Jhe (Hanzi Unknown)
Position(s): Leader, Main Dancer, Rapper
Birthday: January 28, 2003
Zodiac Sign: Aquarius
Chinese Zodiac Sign: Horse
Height: 178 (5’10”)
Weight: 63 kg (136 lbs)
Blood Type: N/A
MBTI Type: ISTJ/ESFJ
Nationality: Taiwanese
Tetsu Facts:
– He was born in Taipei, Taiwan.
– Tetsu is half Taiwanese and Japanese, but he confirmed through his self-written profile on Fanvatar that he only holds Taiwanese nationality (X).
– He was the first member to be revealed on April 27, 2025, and was later reintroduced along with the other members on September 20, 2025.
– His nickname is Kangaroo, which was given to him by Ruone because of his muscular body.
– He can eat up to four servings of ramen in one sitting.
– His hidden specialty is making a unique snapping sound.
Jeesoo
Stage Name: Jeesoo (지수)
Birth Name: Jeesoo Lee
Korean Name: Lee Jee Soo (이지수)
Position(s): Rapper
Birthday: May 28, 2004
Zodiac Sign: Gemini
Chinese Zodiac Sign: Monkey
Height: 186 cm (6’1″)
Weight: 67 kg (147 lbs)
Blood Type: N/A
MBTI Type: ISTP
Nationality: Korean-Canadian
Jeesoo Facts:
– He was born in Calgary, Canada.
– He was the second member to be revealed on September 21, 2025.
– He is the tallest member.
– His nickname is SooJee.
– The food he is into these days is sweet pumpkin.
– He is best at controlling his eyes among the members.
– He can speak English and Korean.
– His favorite food is tteokbokki, which his mother used to make often when he lived in Canada.
Ruone
Stage Name: Ruone (루원)
Birth Name: Takehata Kai (タケハラカイ)
Position(s): Vocalist, Dancer
Birthday: June 17, 2004
Zodiac Sign: Gemini
Chinese Zodiac Sign: Monkey
Height: 182 cm (6’0″)
Weight: 67 kg (147 lbs)
Blood Type: B
MBTI Type: INFP (Previous result was INFJ)
Nationality: Japanese
Ruone Facts:
– He was the third member to be revealed on September 22, 2025.
– He was a contestant on the survival show MAKEMATE1, and he was eliminated in episode 6. He used the stage name Kai during the show.
– He wants to be an idol who keeps trying hard to become a better artist.
– He can speak Korean and Japanese.
– Ruone’s role model is Taeyong from NCT.
– One of his nicknames is Kai-kun.
– His recommended food combo is yogurt from convenience stores with banana and tapioca milk tea.
– He enjoys watching stage cams of his favorite idols.
– One of his favorite songs is “Kick It” by NCT 127, which he mentioned during his participation in MAKEMATE1 as a song he would like to cover.
– He is confident in his visuals.
– He’s known for having a long neck.
– He is best at modeling poses among the members.
– His special talent is jumping far.
Kiwon
Stage Name: Kiwon (기원)
Birth Name: Yoo Ki Won (유기원)
Position(s): Main Vocalist, Dancer
Birthday: July 30, 2006
Zodiac Sign: Leo
Chinese Zodiac Sign: Dog
Height: 174 cm (5’9″)
Weight: 56 kg (132 lbs)
Blood Type: N/A
MBTI Type: INFP
Nationality: Korean
Kiwon Facts:
– He was the fourth member to be revealed on September 23, 2025.
– His specialties are singing, dancing, b-boying, being able to lift his leg behind his head, and flexibility.
– Kiwon’s role model is D.O from EXO.
– He was a contestant on the survival show BOYS II PLANET, and he was eliminated in episode 1.
– He trained for 5 months before joining BOYS II PLANET.
– His lucky number is 621.
– One of his nicknames is Yoo Ki-Nong.
– He participated in BOYS II PLANET as an individual trainee and later signed with E Entertainment after his elimination.
– Kiwon’s POWER MAX song is “By My Side” by JUNNY.
– Kiwon’s hobbies are walking around unfamiliar places and listening to music.
– Kiwon’s secret weapons are his singing, dancing, and quick wit.
– He used to dance at ON MUSIC Academy.
– He released his solo single “こころ” on December 30, 2025, as part of the group’s pre-debut releases.
– His charming point is his vocal tone.
– He is best at using his body among the members.
Seungsang
Stage Name: Seungsang (승상)
Birth Name: Cho Seung Sang (조승상)
Position(s): Vocalist, Dancer, Maknae
Birthday: May 30, 2007
Zodiac Sign: Gemini
Chinese Zodiac Sign: Pig
Height: 178 cm (5’10”)
Weight: 62 kg (137 lbs)
Blood Type: N/A
MBTI Type: ESTP
Nationality: Korean
Seungsang Facts:
– He was born in Seoul, South Korea. His family later moved to Sunchang.
– He was the fifth member to be revealed on September 24, 2025.
– His father is the actor Cho Sunchang.
– His current nicknames are Samsung (which was given to him by Jeesoo), Seung, and Sseuseu.
– His childhood nickname was “Cry Baby” because he used to cry easily when people spoke to him or when he had to do a presentation.
– His special talent is that his fingers are flexible, so he can do shadow puppets or make brand logos with his hands.
– He is the eldest of three siblings.
– He is a fan of BTS and can recognize their songs after hearing just one second.
– He is good at wrestling, catching bugs, hitting high notes, distinguishing smells, and being confident.
– He used to be part of a dance team called Leap Up.
– He has a mole on his nose.
– He is a fan of My Hero Academia and owns a lot of its merchandise.
Note 1: Please don’t copy-paste the content of this page to other sites/places on the web. Please do respect the time and effort the author put in compiling this profile. If you need/want to use info from our profile, please kindly put a link to this post. Thanks a lot! 
– Kprofiles.com
Note 2: The members’ heights and weights were confirmed through their profiles on E Entertainment’s official website (Link), while their MBTI types were confirmed through their self-written profiles for FANVATAR (Links: 1/ 2).
For reference on MBTI types:
E = Extroverted, I = Introverted
N = Intuitive, S = Observant
T = Thinking, F = Feeling
P = Perceiving, J = Judging
Note 3: Their positions and the group’s official greeting were confirmed at the 2025 Link Kpop Music Festival in Tokyo and through their self-written profiles for FANVATAR (Links: 1/ 2/ 3). Kiwon’s position as Main Vocalist and Tetsu’s position as Main Dancer were confirmed by MBCNEWS (Link).
Made by: “felipe grin§”
(Special thanks to: wonjunforlife, yejun_823, zalfaradio, Lee Felix, Ellie, leo)
Latest Official Release:
Who is your AmbiO bias? Do you know more facts about them? Feel free to comment below. 
