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LIMITLESS Profiles, Appearance on Produce 101 Season 2, And More


Meet LIMITLESS The South Korean Boy Band You Should Check Out

LIMITLESS debuted on July 9th, 2019, under ONO Entertainment. The members are A.M, VOK, Raychan, J-Jin, and C.I. These five fellow members have been working hard to release their album titled Dream Play.

Let’s check them out in this Byeol Korea article below!

LIMITLESS Group Profile


LIMITLESS (Hangeul: 리미트리스) are also called LMTLS as a shorter version of the group’s name. They are contracted under ONO Entertainment which has successfully made the five members A.M, VOK, Raychan, J-Jin, and C.I get along well. Their single “Dream Play” was launched on July 9th, 2019. Unfortunately, on May 26th, 2020, member Heesook decided to leave the group.

Here are the LIMITLESS Official Accounts:
Daum: Limitless Café
Instagram: @official_lmtls
YouTube: Limitless
Twitter: @Official_lmtls

LIMITLESS Members Profiles and Facts


Stage Name: A.M (에이엠)
Birth Name: Seong Hyun Woo (성현우)
Positions: Leader, Main Rapper, Main Dancer, Vocalist
Date of Birth: December 31st, 1996
Zodiac: Capricorn
Height: 181 cm (5’11”)
Weight: 61 kg (134 lbs)
Blood Type: A
Instagram: @a_stru_m

A.M Facts:
– The stage name A.M means ‘Astrum.’
– His family consists of his mother, father, and older brother and sister.
– In his resume, A.M lists as his strong features on his physical the face, hands, body proportions, and versatility.
– Eventually, he revealed that his weakness is greed.
– He has a habit of swinging his bangs up while saying “um,” “ah,” and “uh” a lot.
– The most remarkable things for him were when he was able to meet the fans for the first time and also found out his boy group name.
– A.M has VOK saved in his phone as Check!man Moonbok.
– A.M was even a contestant of Produce 101 Season 2 with Moonbok and Heeseok.
– A.M left his company to join VOK at ONO.
– A.M was featured on VOK’s mini-album Peeps.
– A.M was a trainee for four years and seven months before joining Produce 101 Season 2.
– A.M’s final rank was #61 on Produce 101 Season 2 as he was a trainee at The Vibe Label during the show.
– A.M has released solo music as well.
– A.M revealed that Raychan is like his real brother; he said that Raychan is his twin, and Heeseok is his pet.
– A.M’s personality type is ENTJ-A.


Stage Name: VOK ()
Birth Name: Jang Moon Bok (장문복)
Position: Lead Rapper, Vocalist
Date of Birth: April 11th, 1995
Zodiac Sign: Aries
Height: 168 cm (5’5″)
Weight: 49 kg (108 lbs)
Blood Type: AB
Instagram: @check_h.p

VOK Facts:
– VOK’s family consists of his mother.
– VOK was born in Daegu, South Korea.
– He is very popular for his Superstar K2 audition tape.
– VOK was ranked 27th on Produce 101 Season two.
– VOK was close with A.M and Heeseok during Produce 101 Season two.
– VOK debuted as a solo artist on July 1st, 2016, with the single titled “Hip Hop President” as JMVOK.
– VOK was featured in “The Real” with N.Flying.
– He got the nickname Ending Fairy on the show since a shot of him at the end of the “Me, It’s Me” performance he has a similarity with Jung Chaeyeon.
– He is friends with V from BTS and Juhaknyeon from THE BOYZ.
– In his resume, VOK revealed that his strong points are his appearance, planning quality, arrangement, and neatness.
– His weakness is he takes what people say in any perspective.
– He has a habit of adding “uh” at the end of his statements.
– His personality type is INFJ-A.
– According to him, he feels Hyunwoo is the brother he wants to take care of, Huichan is really funny, and Heeseok is very straightforward.


Stage Name: Raychan (레이찬)
Birth Name: Lee Hui Chan (이휘찬)
Position: Main Vocalist
Date of Birth: April 18th, 1996
Zodiac Sign: Aries
Height: 172 cm (5’7)
Weight: 53 kg (116 lbs)
Blood Type: B

Raychan Facts:
– Raychan’s family consists of his mother, father, and older brothers.
– He has bad eyesight.
– He introduces himself as Cute, Cute, and Cute in that order.
– His Personality type is 1SFP-A/ ISFP-T.
– He also has a habit of attaching “um,” “uh,” and “ah” before his statements.
– His strong features are his dedication to fans, personality, irresistible charm, nose, and voice tone.
– His weakness is his cuteness and also his irresistible charm.
– He revealed that Moonbok is a strong leader, Hyunwoo is a sloppy guy, and Heeseok is a good friend and teacher.
– Raychan has a nickname that holds the meaning ‘Handsome man.’


Stage Name: J-Jin (제진)
Birth Name: Zhan Zhan (湛展)
Position: Vocalist
Date of Birth: March 19th, 1996
Zodiac Sign: Pisces
Height: –
Weight: –
Blood Type: –
Nationality: Chinese
Instagram: @zz.knx

J-Jin Facts:
– J-Jin was born in Hunan, China.
– He became a member of LIMITLESS in November 2019.


Stage Name: C.I (씨아이)
Birth Name: Cai Xiao Xin (蔡小鑫)
Position: Vocalist, Maknae
Date of Birth: March 6th, 1999
Zodiac Sign: Pisces
Nationality: Chinese
Instagram: @caixiaoxin_ci

C.I Facts:
– C.I was born in Hunan, China.
– C.I became a member of LIMITLESS in November 2019.

Former Members:

Stage Name: Heeseok (희석)
Birth Name: Yoon Hee Seok (윤희석)
Position: Lead Vocalist
Date of Birth: June 10th, 1997
Zodiac Sign: Gemini
Height: 181 cm (5’11”)
Weight: 61 kg (134 lbs)
Blood Type: A
Instagram: @dilution_y

Heeseok Facts:
– His family consists of his mother, father, and younger sister.
– He has a dog.
– He has bad eyesight.
– His strong features are his sensitivity and his objectiveness.
– His weakness is his lack of confidence.
– He was a contestant on season two of Produce 101 along with Moonbok and Hyunwoo.
– He left his company to join Moonbok at ONO.
– He got featured on Moonbok’s mini-album titled Peeps.
– In Produce 101 he was a Jellyfish trainee and got to the finals with the final rank #46.
– He got a lot of attention because his face has a similarity with N of VIXX.
– His most remarkable moment was meeting fans whilst busking for the first time ever.
– Heeseok says the best feature of himself would be shoulders, voice tone, and sideline.
– In his resume, Heeseok loves all the members and sometimes hates himself.
– His personality type is ISTJ-T.
– On May 26th, 2020, Heeseok left the group.

Debut Story

ONO Entertainment launched LIMITLESS on July 1st, 2019, on their official Twitter. They debuted with the single “Dream Play.” In the beginning, the group consisted of Jang Moon Bok, Raychan, A.M, and Heeseok. They also showed their concept photo, spoiler photo and interview, album cover image, music video teaser, and individual teasers before the debut date.

The official agency expressed, “With the group on the verge of debut with the official name LIMITLESS, the members are concentrating on practicing day and night to showcase an amazing song and performance for fans. Please look forward to and support the boy group LIMITLESS who will heat up the music industry this summer.”

The group was made up of members who used to be contestants in some popular survival or music reality show such as Jang Moon Bok, who had joined Mnet’s Superstar K2 and Produce 101 Season 2, members Song Hyun Woo and Yoon Hee Seok, who were also both on Produce 101 Season 2 together with Jang Moon Bok, and also member Lee Hwi Chan, who had joined JTBC’s MIXNINE” The members of LIMITLESS have been doing fan meetings since 2018.

Appearance On Mnet Produce 101 Season 2

The members of LIMITLESS who are part of Mnet’s Produce 101 Season 2 are Jang Moon Bok, Song Hyun Woo, and Yoon Hee Seok. They signed s contract to debut as LIMITLESS members under ONO Entertainment. Hee Seok was the first one to debut on television under Jellyfish Entertainment, yet he decided to leave the company in 2019 to focus on his studies.


Hee Seok has been posting on social media about something that has never been discussed before with the agency.

In the beginning, he was accepted to come back again to the agency. He even extended his gratitude to the fans who have supported him all the way to his debut. He uploaded on his Instagram account, “Even while I was focusing on my studies, I never stopped thinking about music. Thanks to Seong Hyun Woo, I have gained another chance to pursue my music.” The member and ONO Entertainment were enthusiastic.

Yet Hee Seok on May 24th, posted on his Instagram that he doesn’t want to become a member of LIMITLESS anymore and hopes that the fans won’t worry if they don’t hear any news or promotions.

Here is the letter that he wrote,

Hello, this is Yun Heeseok.

I will no longer live as LIMITLESS’ Yoon Heeseok but as Yoon Heeseok.

I think you will be surprised a lot.

At least, I want to say this to fans who have been worried for me who has no updates since our last promotions in December last year.

I am so sorry.

I am really grateful for those who have loved me until now.”

After he wrote this letter, his Instagram went dark and the account was deleted. Apparently, ONO Entertainment never heard about it since he uploaded the letter on his social media, therefore the agency still checked the validity of the information.

Yet ONO Entertainment has been getting difficulties to get in touch with Yoo Hee Seok. ONO Entertainment also explained that they never canceled the contract and didn’t have any problem with the contract before.

ONO Entertainment also said that all the members postponed their activities because of the emergence of the COVID-19 pandemic. LIMITLESS get to be home and rest in their homes, whereas they were actually supposed to be in Japan promoting at this time.

Until recently, Yoo Hee Seok has still not responded to any confirmation regarding his statement on his social media to ONO Entertainment. ONO Entertainment has found it difficult to reach him personally.

Latest News

Due to this pandemic of COVID-19, all the schedules of their promotion have been postponed and the members are home until new conditions are revealed.

The agency, ONO Entertainment is still looking for Yoo Hee Seok for his own letter confirmation about his resignation from the group LIMITLESS.

He expressed, he wants to be the ordinary Yoo Hee Seok and apologized to share the bad news to all fans. Until now, from May 25th, ONO Entertainment can’t contact him yet. After “Wish Wish” and “Dream Play” in 2019, LIMITLESS haven’t launched any song yet. Let’s support everything that LIMITLESS has been doing and hope the pandemic ends as soon as possible. Don’t forget to kindly write down your comment and share your thoughts in the section below!