Kevin
케빈 · 문형서 (Moon Hyung Seo) · Kevin Moon
Kevin Moon — Main Vocalist
February 23, 1998 Korean-Canadian 176 cm 56 kg Type AB Pisces
Kevin is a South Korean-Canadian singer known as the main vocalist of the K-pop boy group The Boyz. Born Kevin Moon (Moon Hyung-seo) on February 23, 1998, in Gwangju, South Korea, he moved to Vancouver, Canada, at age four before returning to Korea to train and debut with The Boyz on December 6, 2017. Kevin first appeared on the public radar as a contestant on 'K-pop Star 6' and released a drama OST in 2017 prior to his official debut. Since joining The Boyz, he has stood out for his husky, distinctive vocal tone on tracks like 'D.D.D' and 'Whisper,' and even designed the group's original logo during his trainee years. Fluent in both English and Korean, Kevin is known for his outgoing, humorous personality, frequently voted one of the most talkative and playful members on variety segments. He also has a creative streak, enjoying drawing and dabbling in songwriting and music production. Following the resolution of The Boyz's 2026 contract dispute with ONE HUNDRED, Kevin continues to promote with the group as an independent act, valued by fans of THE B for his voice, humor, and bicultural charm.
Story
Biography
Kevin (케빈), born Kevin Moon (Moon Hyung-seo, 문형서), is a South Korean-Canadian K-pop idol and the main vocalist of the boy group The Boyz. Born on February 23, 1998, in Gwangju, South Korea, Kevin moved to Vancouver, Canada, at age four before returning to Korea to pursue a career in music, ultimately debuting with The Boyz on December 6, 2017.
Before joining The Boyz, Kevin first gained public attention as a contestant on the audition program K-pop Star 6 and released an OST for the drama Saimdang, Light’s Diary in 2017. Since debut, he has become known for his distinctive, husky vocal color, contributing standout vocals to songs like “D.D.D” and “Whisper,” and for designing the group’s original logo during his trainee days.
Bilingual in English and Korean, Kevin is often praised for his outgoing, humorous personality on variety shows, where he has been voted among the most talkative and most outgoing members of The Boyz. He is also known for his creative side, enjoying drawing, songwriting, and exploring music production alongside his idol activities.
In 2026, Kevin joined the majority of his groupmates in winning a court ruling that ended their exclusive contract with ONE HUNDRED, paving the way for The Boyz to continue as an independent K-pop act. With nearly a decade of experience as a vocalist and performer, Kevin remains a fan favorite among THE B for his vocal talent, warm humor, and easygoing charm.
Profile
Basic Information
| Stage Name | Kevin |
| Full Birth Name | Kevin Moon (Moon Hyung-seo, 문형서) |
| Date of Birth | February 23, 1998 |
| Birthplace | Gwangju, South Korea |
| Hometown | Vancouver, British Columbia, Canada |
| Nationality | Korean-Canadian |
| Height | 176 cm (5'9"") |
| Weight | 56 kg (123 lbs) |
| Blood Type | AB |
| Zodiac Sign | Pisces |
| MBTI | INFP-T |
| Education | Not officially disclosed |
| Agency | Independent (formerly ONE HUNDRED, IST Entertainment, Cre.Ker Entertainment) |
| Debut | December 6, 2017 (The Boyz, ""The First"") |
| Languages | Korean, English |
| Nicknames | Keb |
| Hobbies | Singing, drawing, composing |
| Favorite Color | Gold |
| Ideal Type | Not officially confirmed |
Membership
Groups & Positions
The Boyz
Independent (formerly ONE HUNDRED, IST Entertainment, Cre.Ker Entertainment)
Main Vocalist
December 2017 - Present
The Lineup
Group Members — The Boyz
Sangyeon
Leader · Main Vocalist
Jacob
Lead Vocalist
Younghoon
Sub Vocalist · Visual
Hyunjae
Lead Vocalist · Lead Dancer · Visual
Juyeon
Main Dancer · Sub Vocalist · Visual
Kevin
Main Vocalist
This Idol
New
Main Vocalist
Q
Main Dancer · Sub Vocalist
Sunwoo
Main Rapper · Lead Dancer · Sub Vocalist
Eric
Lead Dancer · Lead Rapper · Sub Vocalist
Journey
Career Timeline
2015
K-pop Star 6 appearance
Appeared as a contestant on the audition show ""K-pop Star 6,"" gaining early public recognition before being eliminated.
2017
Drama OST release
Released an original soundtrack for the drama ""Saimdang, Light's Diary"" ahead of his official debut.
2017
Debuted with The Boyz
Officially debuted as The Boyz's main vocalist with the EP ""The First"" on December 6, 2017.
2019
Japanese debut
Promoted as one of the group's main vocalists during The Boyz's Japanese debut with the EP ""Tattoo.""
2020
Road to Kingdom victory
Delivered standout vocal performances that helped The Boyz win first place on Mnet's ""Road to Kingdom.""
2024
Agency transfer
Moved with the group to ONE HUNDRED following the end of their contract with IST Entertainment.
2026
Contract termination ruling
Won a court ruling in April 2026 ending his exclusive contract with ONE HUNDRED, continuing activities with The Boyz independently.
Music
Discography
💜
The First
EP
2017
💜
The Start
EP
2018
💜
The Only
EP
2018
💜
Dreamlike
EP
2019
💜
Reveal
Studio Album
2020
💜
Chase
EP
2020
💜
Thrill-ing
EP
2021
💜
Be Aware
EP
2022
💜
Be Awake
EP
2023
💜
Phantasy Pt.1: Christmas in August
Studio Album
2023
💜
Phantasy Pt.2: Sixth Sense
Studio Album
2023
💜
Phantasy Pt.3: Love Letter
Studio Album
2024
💜
Trigger
EP
2024
💜
Unexpected
Studio Album
2025
💜
A;Effect
EP
2025
🎧
The Sphere
Single Album
2018
🎧
Bloom Bloom
Single Album
2019
🎧
Maverick
Single Album
2021
Recognition
Awards & Achievements
Rookie Award
Korea Brand Awards
2018
Best New Male Artist
Melon Music Awards
2018
Winner, Road to Kingdom
Mnet Road to Kingdom
2020
Artist of the Year (Bonsang)
The Fact Music Awards
2021
Best Performance
Golden Disc Awards
2022
Did You Know?
Trivia & Fun Facts ✨
★
Born in Gwangju, South Korea, and moved to Vancouver, Canada, at age four.
★
Has an older sister named Stella, born in 1996.
★
His parents named him after watching the movie "Home Alone."
★
His nickname among fans and members is "Keb."
★
Fluent in English.
★
Designed The Boyz's original group logo during his trainee days.
★
Has a pet snake named Morty.
★
A huge fan of Beyoncé.
★
First appeared publicly as a contestant on "K-pop Star 6," where he was eliminated in an early round.
★
Released an OST for the drama "Saimdang, Light's Diary" in 2017, prior to debut.
★
Chosen as the most talkative member by his fellow members.
★
Considered one of the biggest K-pop fans among The Boyz's members.
★
Voted the most outgoing member of the group.
★
Claims he can identify the brand of Korean fried chicken just by its smell.
★
Said he'd like to have member New's resonating voice, per Rolling Stone Korea.
★
Grew up bilingual, fluent in both English and Korean.
★
Chose member Eric as best suited to the concept of the group's 8th mini album, "Be Awake."
★
Once said he wished to speak informally (banmal) with leader Sangyeon.
★
Enjoys drawing and other creative arts in his free time.
★
Known for his unique, husky vocal color within the group's vocal line.
★
His representative color is gold and his representative number is 16.
★
Was one of the group's main vocalists during The Boyz's Japanese debut promotions.
★
Contributed key vocals to fan-favorite tracks including "D.D.D" and "Whisper."
★
Known for his fun, humorous personality on variety shows.
★
Has expressed interest in doing more songwriting and music production work.
★
Close friends with fellow member Sunwoo.
★
Attended school in Vancouver before returning to Korea to train as an idol.
★
Trained under Cre.Ker Entertainment before The Boyz's 2017 debut.
The Fandom
Fan Club & Fan Name 💜
Official Fan Name
THE B
"The B" (더비, Deobi) is the official fandom name of The Boyz, short for "The Boyz's Vitamin." The first syllable of "vitamin" in Korean is pronounced like the English letter B, reflecting the idea that fans are like vitamins for the members, while B also stands for "The Best." The name was revealed on April 4, 2018.
Official Fan Color
Gold
Kevin's personal representative color within The Boyz, reflecting his bright, outgoing vocal presence.
Official Light Stick
Heart Bbyong Bong (Official Light Stick)
A white, megaphone-shaped light stick unveiled in March 2021, symbolizing THE B's cheering voice for The Boyz. The bullhorn-style head glows in each fan-chant color and was later registered as a protected design in May 2022.
Fan Community Platform
Weverse
The Boyz's main platform for communicating directly with THE B through posts, live broadcasts, and membership-only content.
Stay Connected
Social Media
Photos
Gallery 📷
