---
title: "CORTIS (코르티스)"
url: https://coolkpop.com/artists/cortis
as_of: 2026-10-30
---

# CORTIS (코르티스)

Five-member BIGHIT MUSIC boy group (acronym for "Color Outside the Lines") debuted August 18, 2025. Billed as a self-producing "young creator crew" with no fixed positions, all five members co-produce music, choreography, and visuals.

| Field | Value |
| --- | --- |
| Category | Boy Group |
| Generation | 5th |
| Debut | 2025-08-18 |
| Agency | BIGHIT MUSIC |
| Fandom | COER |
| Status | Active 5-member self-producing "young creator crew"; BIGHIT MUSIC’s first boy group in 6 years since TXT, topping Circle Digital Chart in 2026 with "REDRED". |
| Self-producing | Yes |

Official links: [youtube](https://www.youtube.com/@CORTIS), [x](https://x.com/cortis_bighit), [instagram](https://www.instagram.com/cortis_bighit/), [weverse](https://weverse.io/cortis), [website](https://ibighit.com/).

Source: [BIGHIT MUSIC Official CORTIS Weverse & Debut Credits](https://weverse.io/cortis). Type: Official Source Cited. Recorded: 2026-10-30.

## Members

| Name | Korean | Born | Nationality | Positions | Status | Profile |
| --- | --- | --- | --- | --- | --- | --- |
| James | 제임스 | 2005-10-14 | Thai-Chinese (Hong Kong/Taiwan) | Co-Creator Crew (No Fixed Positions) | active | [Open](https://coolkpop.com/idols/cortis-james) |
| Juhoon | 주훈 | 2008-01-03 | South Korean | Co-Creator Crew (No Fixed Positions) | active | [Open](https://coolkpop.com/idols/cortis-juhoon) |
| Martin | 마틴 | 2008-03-20 | Canadian-Korean | Leader, Co-Creator Crew (No Fixed Positions) | active | [Open](https://coolkpop.com/idols/cortis-martin) |
| Seonghyeon | 성현 | 2009-01-13 | South Korean | Co-Creator Crew (No Fixed Positions) | active | [Open](https://coolkpop.com/idols/cortis-seonghyeon) |
| Keonho | 건호 | 2009-02-14 | South Korean | Co-Creator Crew, Maknae | active | [Open](https://coolkpop.com/idols/cortis-keonho) |

## Where to start

- [What You Want](https://www.youtube.com/results?search_query=CORTIS%20What%20You%20Want%20Official%20MV%20HYBE%20LABELS) (2025, Title Track): Official August 2025 debut single introducing CORTIS’s genre-blurring alt-pop production.
- [GO!](https://www.youtube.com/results?search_query=CORTIS%20GO%20Official%20MV%20HYBE%20LABELS) (2025, Performance / Stage): Self-directed pre-debut music video highlighting their DIY "creator crew" visual identity.
- [REDRED](https://www.youtube.com/results?search_query=CORTIS%20REDRED%20Official%20MV%20HYBE%20LABELS) (2026, Title Track): 2026 Circle Digital Chart #1 breakout single.