CORTIS Members Guide: Everything New Fans Need to Know
Meet CORTIS, BigHit's self-producing 5-member group who went from 2025 rookies to a Billboard 200 top 3 album and their first daesang in under a year.
Who Are CORTIS?
CORTIS is a five-member boy group under BIGHIT MUSIC — the label’s first new boy group since TOMORROW X TOGETHER, which alone guaranteed attention. What they did with that attention is the actual story.
The name is an acronym for COLOR OUTSIDE THE LINES, and it isn’t just branding. All five members write, compose, choreograph, and shoot their own video content. Agencies describe a lot of groups as “self-producing”; with CORTIS the credits back it up, which is why the industry started calling them a creator crew rather than a standard idol group almost immediately.
They debuted on August 18, 2025 with “What You Want” from the EP Color Outside the Lines, and became the fastest K-pop group in history to reach 500 million Spotify streams.
Members
| Name | Role | Quick Facts |
|---|---|---|
| Martin | Leader | Born in Seoul, partly raised in Ottawa, Canada. Tallest member. |
| James | Eldest | Thai–Hong Kong background; speaks five languages (EN/ZH/TH/KO/JA). Singer, songwriter, choreographer. |
| Juhoon | Vocalist | Former youth model; international-school English; the group’s emotional voice. |
| Seonghyeon | Main Vocalist, Lead Dancer | Born Jan 13, 2009. Topliner and lyricist — credited on all five debut EP tracks. |
| Keonho | Maknae | Born Feb 14, 2009. The youngest member. |
Two things worth noticing in that table. First, the age range is extreme even by rookie standards — Seonghyeon and Keonho were both born in 2009, meaning they debuted as teenagers and are writing their own material. Second, the group is genuinely multinational in background rather than in marketing: Martin’s Canadian upbringing and James’s Thai–Hong Kong roots and five languages give CORTIS a natural fluency in global content that most rookie groups have to manufacture.
Discography
Color Outside the Lines (August 2025)
The debut EP, led by “What You Want.” It entered the Billboard 200 at No. 15 — a strong rookie showing that, in hindsight, was the smaller of their two chart stories.
Greengreen (May 4, 2026)
The second EP, previewed by the pre-release single “REDRED” (April 20, 2026). This is where the numbers stopped looking like rookie numbers:
- No. 3 on the Billboard 200 — their first US top-10 album, arriving less than nine months after debut
- No. 1 on Billboard’s Top Album Sales chart — the best-selling album in the US that week
- Over 2.12 million pre-orders (as of late April)
- Circle Chart 2x Million certification — over two million copies shipped for the standard edition, with the Weverse edition separately certified 2x Platinum
- B-side “Acai” passed 10 million YouTube views within a month
The Awards Run
CORTIS effectively swept the 2025–26 rookie categories, then went a step further:
- Best New Artist, 2025 MAMA Awards
- Rookie of the Year, Asia Artist Awards
- Rookie Artist of the Year, 40th Golden Disc Awards
- Record of the Year, 2026 KM Chart Awards — their first daesang (grand prize), in under twelve months from debut
For scale: a daesang inside a group’s first year is rare enough that it resets expectations for everything that follows. It also showed up in the buzz metrics — CORTIS placed No. 2 in the July 2026 boy group brand reputation rankings, behind only BTS and ahead of acts with a decade’s head start. (New to that metric? See our brand reputation ranking guide.)
Put Your Phone Down: The First Tour
Announced in June 2026, CORTIS’s first tour opened with two nights at Inspire Arena, Incheon (July 18–19, 2026) before heading to nine cities across North America and Japan.
Confirmed North American dates included New York (Aug 6), Irving TX (Aug 11), Los Angeles (Aug 13), and San Francisco (Aug 15–16) — all six North American shows sold out.
The tour title is a statement in itself: an act built on self-produced digital content asking a room full of fans to put their phones away. Reception hasn’t been unanimous — some Korean coverage of the Incheon opening noted the short runtime and a setlist drawn heavily from two EPs, which is a fair critique of any group touring on less than a year of material.
How to Follow CORTIS
- Official profile: BIGHIT MUSIC — CORTIS
- Weverse: weverse.io/cortis — where notices and member posts land first
- Fandom name: not yet announced, which is unusual this far into a career and has become a running fan joke
Where to Start If You’re New
- “What You Want” — the debut, and the clearest statement of the concept
- “REDRED” — the pre-release that set up Greengreen’s scale
- “Acai” — the B-side that found its own audience, and the best argument that the self-producing credit is real
FAQ
When did CORTIS debut? August 18, 2025, with “What You Want” from the EP Color Outside the Lines.
What does CORTIS stand for? “COLOR OUTSIDE THE LINES” — a statement about breaking K-pop conventions, and the title of their debut EP.
Who is the leader of CORTIS? Martin, who was born in Seoul and spent part of his childhood in Ottawa, Canada.
Do CORTIS really write their own music? Yes — all five members hold writing, composing, choreography, and video credits. Seonghyeon is credited on all five tracks of the debut EP.
Has CORTIS won a daesang? Yes. Record of the Year at the 2026 KM Chart Awards, less than a year after debut.
Does CORTIS have a fandom name? Not yet. The group communicates with fans through Weverse in the meantime.