Full Profile of ONEUS Members (Facts, Age, Height, Weight, and Debut)

Oneus Valkyrie

Who are ONEUS, and what is their fandom name?

Are you familiar with the girl group MAMAMOO? This time, RBW Entertainment decided to make a new group with entirely different characteristics from MAMAMOO, a boy group called ONEUS! According to the CEO of RBW Entertainment, ONEUS is a ‘classic idol group’ and has the characteristics of classic idol groups expected from the public. Even though they have different characteristics, each of its members is talented, just like their seniors. The fandom’s name is To Moon. Are you curious about this freshly debuted boy group? Let’s take a look at ONEUS members’ profiles!

All about ONEUS members’ pre-debut and debut

Before ONEUS made its debut, a few of the members had appeared in television programs, especially survival programs. Some of them had made their appearance in Mnet’s Produce 101, JTBC’s MIXNINE, and a project made by RBW Entertainment known as RBW Boys.

Even though some of the members had already appeared in television programs, the group officially debuted together under the name ONEUS on January 9th, 2019, with “Valkyrie” as the lead single and Light Us as the debut EP.

Let’s find out which members have participated in survival programs!

Produce 101


In the second season of Produce 101, three members of ONEUS participated: Seo-ho, Geon-hee, and Hwan-woong. Unfortunately, the three of them couldn’t make it to the final stage of the program. Seo-ho was eliminated quite early as his final rank was 94th. Here is a video of RBW Entertainment trainees’ first performance in Produce 101:


Hwan-woong managed to last longer as he placed 42nd and had a chance to perform twice. He sang Shinee’s “Noona Is So Pretty” and performed Flo Rida’s “Right Round” for a dance position. Here is a video of his performance in Produce 101:


Meanwhile, Geon-hee’s final rank was 33rd, and he had three performances in Produce 101. He sang Shinee’s “Noona is So Pretty,” performed BoA’s “Amazing Kiss” for a vocal position, and performed “Oh Little Girl” for concept evaluation. You can see the videos of his performances in Produce 101 below:



There are two members of ONEUS who have participated in MIXNINE, Ravn, and Seo-ho. After getting eliminated quite early in Produce 101, Seo-ho participated in MIXNINE and was placed in a higher rank than the previous program. At that time, Seo-ho ranked 17th, while Ravn ranked 27th. You can find Seo-ho in a performance where the contestants sang TVXQ’s “Love In the Ice,” while Ravn in Gain’s “Paradise Lost.” You can see their performances in MIXNINE below:

RBW Boys


RBW Boys is a project made by RBW Entertainment to launch a new group. They had to go through a project titled RBW Trainee Real Life: We Will Debut. The project began with a monthly evaluation and later revealed each step of a boy group’s debut process, including practice, training, and daily lives, through Naver’s V Live and RBW Entertainment’s official YouTube account. Here are a few videos of RBW Boys:

ONEUS members profiles and interesting facts

ONEUS is a group that consists of six members, namely Ravn, Seoho, Leedo, Keonhee, Hwanwoong, and Xion. If you are curious and want to know more information and things about them, do not worry, we will give you anything you need to know about them. Let’s check this out!

Full profile of Ravn

  • Full Name: Kim Young-jo
  • Stage Name: Ravn (read as Raven)
  • Date of Birth: September 2nd, 1995
  • Age: 25 (International Age); 26 (Korean Age)
  • Zodiac: Virgo
  • Height: 178 cm (5’10″)
  • Weight: 65 kg (143 lbs)

Ravn is one of the members of ONEUS who appeared in MIXNINE as a contestant. At that time, he secured his position at rank 27. He used to work as a child model and a child actor even though he only starred as an extra. Before joining RBW Entertainment, he used to be a trainee of JYP Entertainment, YG Entertainment, and Plan A Entertainment. He even ranked 2nd at JYP’s audition in 2016. He was also supposed to debut as a member of Victon but eventually left the company.

His stage name is inspired by an X-Men hero who he likes, Mystique Raven. He has an older sister, and he keeps a dog named Sunny. His hobby is doodling, and he can speak Japanese fluently. In the past, he appeared in MAMAMOO’s music video “Everyday” and JIN JU’s music video “GIẢ VỜ NÓI YÊU EM ĐI.” If you want to listen to his works, you can visit his SoundCloud account here!

Interesting facts about Ravn

  • Yongin, South Korea, is the place where Ravn was born.
  • Ravn has one big sister.
  • Ravn used to be a trainee of JYP Entertainment, YG Entertainment, and Plan A.
  • Ravn was supposed to and almost debuted as a member of Victon, but he left the company.

Full profile of Seo-ho

  • Full Name: Lee Gun-min, but legally changed to Lee Seo-ho
  • Stage Name: Seo-ho
  • Date of Birth: June 7th, 1996
  • Age: 24 (International Age); 25 (Korean Age)
  • Zodiac: Gemini
  • Height: 176 cm (5’9″)
  • Weight: 63 kg (139 lbs)

Seo-ho is another member of ONEUS who has made a television appearance. He has participated not only in one survival program but two: Produce 101 and MIXNINE. In Produce 101, his final rank was 94, while in MIXNINE, he managed to rank 17th. He was supposed to use his stage name Xion, but in the end, he decided to use Seo-ho as his stage name.

He has an older sister, and his hobbies are playing football and basketball. He also used to train Hapkido. According to him, his attractive points are his sweet vocals and eye smile. Meanwhile, according to Leedo and Xion, he is very easygoing and likes to joke around.

Interesting facts about Seo-ho

  • Seoho is the main vocalist of the group.
  • Seoho was born in Daejeon, South Korea.
  • Seoho became a cameo and model in MAMAMOO Solar’s Music Video “In My Dreams.”
  • Ginger and Pepper are the things that he hates.

Full profile of Leedo

  • Full Name: Kim Geon-hak
  • Stage Name: Leedo
  • Date of Birth: July 26th, 1997
  • Age: 23 (International Age); 24 (Korean Age)
  • Zodiac: Leo
  • Height: 178.5 cm (5’10”)
  • Weight: 67 kg (148 lbs)

Before he joined RBW Entertainment, Leedo used to be a YG Entertainment trainee. He has a younger brother in his family. His specialties are rapping, singing, dancing, and working out. He is also good at speaking English. On the other hand, the thing he hates is vegetables. According to him, his attractive point is the difference between his voice when rapping and singing. Meanwhile, his fellow member Xion said that Leedo often gets shy and gets flustered a lot.

Interesting facts about Leedo

  • Coffee is a drink that Leedo does not like.
  • The main rapper and sub-vocalist are Leedo’s positions in the group.
  • Leedo likes to work out.
  • Leedo’s blood type is AB.

Full profile of Geon-hee

  • Full Name: Lee Geon-hee
  • Stage Name: Geon-hee
  • Date of Birth: June 27th, 1998
  • Age: 22 (International Age); 23 (Korean Age)
  • Zodiac: Cancer
  • Height: 181 cm (5’11”)
  • Weight: 63 kg (139 lbs)

Like Seo-ho, Geon-hee has made his appearance on television by participating in Produce 101 as a contestant. His final rank in the program was 33rd, but he was unable to proceed further. He is close with MXM’s Kim Dong-hyun, solo artist Kim Dong-han, YDPP’s Lee Gwang-hyun, and former FENT trainee Lee Jun-woo.

He has two younger sisters in his family. His hobby is looking at art, and he also likes to eat a lot. He is also talented as he can play the piano and is good in two other languages, English and Japanese. On the other side, he hates awkward atmosphere and cucumbers. According to him, his attractive point is his bright energy.

Interesting facts about Geon-hee

  • Geonhee’s blood type is O.
  • Geonhee’s position in the group is the main vocalist.
  • Cancer is Geonhee’s zodiac sign, while Tiger is his Chinese zodiac.
  • Even though Geonhee likes to eat a lot, he hates cucumber.

Full profile of Hwan-woong

  • Full Name: Yeo Hwan-woong
  • Stage Name: Hwan-woong
  • Date of Birth: August 26th, 1998
  • Age: 22 (International Age); 23 (Korean Age)
  • Zodiac: Virgo
  • Height: 168 cm (5’6″)
  • Weight: 57 kg (125,6 lbs)

If you watch Produce 101 Season 2then you might be familiar with this face! Hwan-woong used to participate in Produce 101 and ranked 42nd. Unfortunately, he couldn’t proceed further. He started dreaming of becoming a singer after he watched Rain.

Hwan-woong is the only child in his family. His hobby is getting on swings, and he also likes to watch movies. He is also multi-talented as he can play guitar and dance, especially locking, waacking, and street dancing. On the other hand, he hates doing things with his hands and dieting. His attractive point is the difference between his image on usual occasions and the stage.

Interesting facts about Hwan-woong

  • Hwanwoong was a graduate student of SOPA (School of Performing Arts Seoul).
  • Hwanwoong used to be a trainee of Pledis Entertainment.
  • WJSN’s Eunseo was Hwanwoong’s classmate.
  • Hwanwoong’s blood type is A.

Full profile of Xion

  • Full Name: Son Dong-ju
  • Stage Name: Xion
  • Date of Birth: January 10th, 2000
  • Age: 20 (International Age); 21 (Korean Age)
  • Zodiac: Capricorn
  • Height: 173 cm (5’8″)
  • Weight: 56 kg (123 lbs)

Originally, he was supposed to use the stage name Leedo but ended up using the stage name Xion. He has a twin brother in another rookie group under the same management, ONEWE, who’s named Dongmyeong. He is the younger twin brother by 1 minute. He used to be an MC for V HEARTBEAT WEEKLY’s K-Pop Chart & News along with his twin brother.

His hobby is watching musicals, and he likes to eat a lot, but he hates working out. His attractive points are his cold appearance, but he actually has a bright and playful personality. He also has pretty eyes and long eyelashes, on which he actually can place a toothpick on top of.

Interesting facts about Xion

  • Xion’s positions in the group are maknae, sub-vocalist, and visual.
  • Leedo said that Xion is in charge of aegyo in the group.
  • Xion has the same blood type as Leedo, which is AB.
  • Xion’s zodiac sign is Capricorn, while his Chinese zodiac is Dragon.

What is the difference between ONEUS and ONEWE?


ONEUS and ONEWE are two different groups that can confuse you because of the name’s similarity. Even though these two groups have similar names and debuted under the same company RBW, still, they are two different groups.

ONEWE is a group that was formed first under RBW on August 13th, 2015, with “Butterfly, Find A Flower” as the digital single. Originally, the group was formed under the name M.A.S 0094 (Make a Sound 0094), but then they changed the name to ONEWE and re-debuted on May 13th, 2019. The group consists of five members Yonghoon, Kanghyun, Harin, Dongmyeong, and CyA.

If ONEWE is a band, then ONEUS is a boy band under RBW who made their debut on January 9th, 2019. It consists of six members Ravn, Seoho, Leedo, Geonhee, Hwanwoong, and Xion. Xion and ONEWE Dongmyeong are twin brothers, Dongmyeon is the older one by one minute.

So, the difference between ONEWE and ONEUS is in the concept of the group. ONEWE is a band, while ONEUS is a boy band.

Who is the ONEUS leader, and why was he chosen as a leader?


The leader position in K-pop groups is one of the most important positions because the leader has the responsibility to take care of the members and explain the group’s concept in every promotion they have.

Every company or agency has its own rules and principles in picking or choosing someone to be a group leader. In ONEUS, there is no specific and fixed information about who is the leader of the group. One said that there is no group leader, which means all the members have the same portion in sharing responsibilities, and they all take an equal part in everything actively. While another said that Ravn is the leader because he is the oldest member of the group.

ONEUS members’ age: from the oldest to the youngest


Based on the year of birth, here is a list of ONEUS members’ age from the oldest to the youngest:

  • Ravn was born on September 2nd, 1995, making him the oldest member of ONEUS.
  • Seoho was born on June 7th, 1996, making him the second oldest member of ONEUS.
  • Leedo was born on July 26th, 1997, making him the third-oldest member of ONEUS.
  • Geonhee was born on June 27th, 1998, making him the fourth oldest member of ONEUS.
  • Hwanwoong was born August 26th, 1998, making him the fifth oldest member of ONEUS.
  • Xion was born on January 10th, 2000, making him the youngest member of ONEUS, or called maknae in Korean.

ONEUS Discography


Since their debut on January 9th, 2019, with “Valkyrie” as the lead single and Light Us as the EP, ONEUS has released several songs. If you want to listen to ONEUS songs, here is the complete discography of ONEUS that will make you fall for their charms.

Title Year Album
Extended plays
Light Us 2019
Valkyrie 2019 Light Us
Last Song (with ONEWE) 2018 We Will Debut

ONEUS official social media


Even though they only recently debuted, ONEUS already have their social media account so their fans can follow their latest activities! Some of their social media accounts are Instagram and Twitter. Let’s take a look at their social media accounts!


ONEUS often update their latest activities through their social media on Instagram. Recently, they shared a post where they congratulate everyone on the Lunar New Year. Here are a few posts of it:

They also often post photos of them behind the stage. You can see a few of them here:

If you want to see more, you can visit the ONEUS official Instagram account here!


The tweets on their official Twitter account are similar to their posts on the Instagram account. So, for those who don’t have or don’t want to use Instagram, you can follow ONEUS’ activity on Twitter!

If you want to see more of their tweets, you can follow ONEUS’ official Twitter account here!

Lately, ONEUS has been actively promoting their single “Valkyrie.” You can find their performances on various music programs, such as Music Bank, M Countdown, Music Core, Show Champion, and many others.

So, what do you think about ONEUS? Are you interested in them and want to be their fan? Don’t forget to kindly share your opinion about ONEUS in the comment section below! And stay tuned on Channel-Korea for more news and updates on your favorite K-pop artists.