MARTIN is the leader of CORTIS, a five-member boy group under BIGHIT MUSIC. Born on March 20, 2008, he is the oldest member of the group. CORTIS debuted in 2025 and is known for its collaborative creative approach, with members participating in music, choreography, performance, and video production.
MARTIN Profile & Facts
| Information | Details |
|---|---|
| Stage Name | MARTIN |
| Group | CORTIS |
| Agency | BIGHIT MUSIC |
| Birthday | March 20, 2008 |
| Role | Leader |
| Debut | 2025 |
| Group | CORTIS |
| Fandom | COER |
MARTIN’s leadership role and birthday are listed on the official CORTIS Weverse community.
Who Is MARTIN?
MARTIN is the leader of CORTIS, a BIGHIT MUSIC boy group consisting of MARTIN, JAMES, JUHOON, SEONGHYEON, and KEONHO.
CORTIS was introduced as a “young creator crew.” The group’s official profile explains that the members participate in songwriting, composition, performance, choreography, and video production. Rather than being limited to fixed positions, the five members work together through a collaborative creative process.
Before CORTIS’ debut, MARTIN trained for several years. In his debut interview with Weverse Magazine, he said that his daily routine had consisted of training for a long time before his debut preparations suddenly accelerated. He also spent three months in Los Angeles working on the group’s album during the summer before his debut.
MARTIN’s Role in CORTIS
MARTIN is officially identified as CORTIS’ leader.
He is also involved in the group’s creative work. CORTIS’ official materials describe all five members as active participants in the group’s music and visual creation rather than restricting them to conventional idol positions.
MARTIN has specifically been credited with music production on CORTIS’ debut material.
MARTIN’s Music Credits
“Lullaby”
MARTIN played a leading role in the production of CORTIS’ “Lullaby.” BIGHIT MUSIC describes the song as being produced with MARTIN at the lead, with JAMES and SEONGHYEON also contributing to the track.
“JoyRide”
All five CORTIS members participated in the lyrics and composition of “JoyRide,” including MARTIN.
“FaSHioN”
MARTIN is among the members credited on “FaSHioN,” together with JUHOON, SEONGHYEON, and KEONHO.
MARTIN’s Creative Contributions
MARTIN’s creative involvement extends beyond performing.
BIGHIT MUSIC states that all five CORTIS members are credited across the group’s debut EP and participated in choreography and music-video production. The group had also created more than 300 songs during the two-year process leading up to their debut album, according to BIGHIT MUSIC.
CORTIS’ official profile describes the members as creators working across:
- Songwriting
- Composition
- Performance
- Choreography
- Video production
- Other visual and creative work
MARTIN’s Pre-Debut Training
MARTIN has spoken publicly about his long training period before CORTIS’ debut.
In his 2025 Weverse Magazine debut interview, he described spending a long time training under a repetitive daily routine before suddenly moving into debut preparations and album production. He also spent three months in Los Angeles working on the album.
MARTIN’s Music Interests
During his Weverse Magazine debut interview, MARTIN discussed how his musical tastes changed during his time in Los Angeles. He mentioned listening to different music while experiencing the more relaxed atmosphere he observed there.
MARTIN’s CORTIS Career
MARTIN debuted as a member of CORTIS in August 2025. The official Weverse community lists CORTIS’ debut date as August 18, 2025 in its activity information.
CORTIS’ debut EP, COLOR OUTSIDE THE LINES, followed in September 2025. The album contains five main tracks: “GO!,” “What You Want,” “FaSHioN,” “JoyRide,” and “Lullaby,” along with a digital-only version of “What You Want” featuring Teezo Touchdown.
MARTIN’s Performances & Activities
MARTIN has participated in CORTIS’ official performances and activities since the group’s debut.
CORTIS’ official activity records include music-show promotions, festival appearances, international schedules, and the group’s first tour, PUT YOUR PHONE DOWN.
In 2026, CORTIS performed at international festivals including Lollapalooza and ROCK IN JAPAN FESTIVAL. These activities were documented through the group’s official Weverse content.
MARTIN’s 2026 Activities
MARTIN continued his activities as CORTIS’ leader throughout 2026.
He participated in the group’s international tour and festival activities. In September 2026, MARTIN posted about the completion of CORTIS’ first PUT YOUR PHONE DOWN tour, thanking fans for their support throughout the tour.
CORTIS’ 2026 activities have also included Lollapalooza, ROCK IN JAPAN FESTIVAL, music performances, and other official schedules.
MARTIN’s Public Appearances
MARTIN’s documented public activities include:
- CORTIS music-show promotions
- CORTIS festival performances
- Lollapalooza 2026
- ROCK IN JAPAN FESTIVAL 2026
- CORTIS’ PUT YOUR PHONE DOWN tour
- Official interviews and magazine content
- CORTIS promotional and media activities
MARTIN’s Awards & Achievements
MARTIN’s major achievements are currently primarily connected to his activities with CORTIS.
MARTIN Quick Facts
- MARTIN is the leader of CORTIS.
- His birthday is March 20, 2008.
- He is the oldest member of CORTIS.
- He is signed to BIGHIT MUSIC.
- He debuted with CORTIS in 2025.
- He participated in the production of “Lullaby.”
- He participated in the lyrics and composition of “JoyRide.”
- He is credited on “FaSHioN.”
- He participated in CORTIS’ broader creative process.
- CORTIS members participated in choreography and music-video production for their debut material.
- MARTIN spent three months in Los Angeles working on CORTIS’ debut album before debut.
MARTIN FAQ
Who is MARTIN?
MARTIN is the leader of CORTIS, a five-member boy group under BIGHIT MUSIC.
When is MARTIN’s birthday?
MARTIN was born on March 20, 2008.
What group is MARTIN in?
MARTIN is a member and leader of CORTIS.
What company is MARTIN under?
MARTIN is under BIGHIT MUSIC as a member of CORTIS.
What is MARTIN’s role in CORTIS?
MARTIN is the leader of CORTIS and participates in the group’s creative work, including music production and songwriting.
Is MARTIN involved in songwriting?
Yes. MARTIN participated in the lyrics and composition of “JoyRide,” along with the other CORTIS members.
Did MARTIN produce any CORTIS songs?
Yes. BIGHIT MUSIC identifies MARTIN as the lead contributor to the production of “Lullaby,” with JAMES and SEONGHYEON also contributing.
When did MARTIN debut?
MARTIN debuted as a member of CORTIS in 2025. The official Weverse community lists the group’s debut in August 2025.
Latest MARTIN Updates
Keep this section updated with KWaveHub articles about MARTIN and CORTIS.
Recommended automatic/latest content:
- MARTIN activities
- CORTIS comebacks and releases
- MARTIN’s confirmed creative credits
- CORTIS performances and festivals
- Interviews and magazine appearances
- Awards and achievements
For the latest updates, see the CORTIS and MARTIN-related articles on KWaveHub.
