CORTIS Members: Profiles with Ages, Positions & Facts

When BigHit Music announced a new boy group in 2025, K-pop fans took notice — the label behind BTS doesn’t launch groups every year. CORTIS landed on August 18, 2025, with five members and a name that nods to creative thinking. For anyone trying to get to know the newest faces, here’s a fact-checked overview of the CORTIS members so far.

Group: CORTIS ·
Company: BigHit Music ·
Debut Date: August 18, 2025 (Rolling Stone) ·
Members: 5 (Wikipedia) ·
Name Meaning: Color Outside The Lines ·
Youngest Member: Keonho (age 17) (Kpop Profiles)

The table below compiles the essential facts about CORTIS for quick reference.

The pattern: Official details from BigHit Music remain sparse, so most of what is known comes from secondary sources and one major interview.

Who Are the Five Members of CORTIS?

Official Member List

• Martin – leader (speculative) (fan database Kpop Profiles)
• James – oldest member (Rolling Stone)
• Juhoon – youth model background (Rolling Stone)
• Seonghyeon – topliner and lyricist (Rolling Stone)
• Keonho – maknae (youngest) (fan database Kpop Profiles)

Five names, one pattern: BigHit Music has kept official roles undisclosed, so most labels come from fan-deduced or media-reported observations. The full detail table at the end of this article compiles everything known so far.

Member Profiles Overview

Each member brings a distinct background. Rolling Stone highlighted James as a dance prodigy with a black belt in taekwondo and about ten years of ice hockey experience. Juhoon, according to the same interview, worked as a youth model and attended an international middle school to improve his English. Seonghyeon is described as a creative contributor who writes lyrics and works as a topliner. Keonho played a significant role in the group’s early music videos, per Rolling Stone’s report. Martin is often listed as the group’s leader by fan databases like Kpop Profiles, though BigHit Music has not confirmed that.

The implication: Until BigHit Music releases official profiles, fans are relying on secondary sources that may not reflect the group’s final lineup of roles.

What Are the Positions in CORTIS?

Confirmed Positions

BigHit Music has not announced any official positions for CORTIS members. Wikipedia summarizes that the group has no fixed positions except for collaborative creative duties, with members contributing to songwriting, production, videography, and choreography.

Unofficial Roles

• Martin is widely speculated as leader by fan sites like Kprofiles and KFriday — KFriday describes this as a “speculated” label rather than a confirmed title.
• James is consistently referred to as the oldest member (Rolling Stone).
• Keonho is cited as the maknae (youngest) by Kpop Profiles.

What this means: The lack of fixed roles may be intentional, allowing CORTIS to define itself organically over time.

How to Recognize CORTIS Members?

Visual Characteristics

Each member has distinct facial features, but no official height or visual guide has been released by BigHit Music. Best bet: study official group photos on the group’s social media.

Official Photos and Media

The most reliable resource is the official Instagram account @cortis, where BigHit Music posts concept photos and teasers. Fan pages like Kprofiles also offer side-by-side comparisons, but these are not agency-verified.

Why this matters: Misidentification is common in early fandom — sticking to official posts reduces confusion.

Who Is the Youngest Member in CORTIS?

Keonho – The Maknae

Keonho is consistently identified as the youngest CORTIS member. According to Kpop Profiles, he was born in 2009, making him 17 years old in 2025. Multiple profiles list his exact birthday as February 14, 2009.

Age and Birthday

Keonho’s birthday is listed as 2009-02-14 by Kpop Profiles. Rolling Stone noted his significant role in the group’s music videos, though his exact age at debut wasn’t specified by the magazine.

The pattern: Keonho fits the typical maknae profile — talented, visual-focused, and the center of fan affection.

Who Is the Leader of CORTIS?

Leadership Status

No official leader has been announced by BigHit Music. Wikipedia states that CORTIS has “no fixed positions.” KFriday explicitly labels Martin as a “speculated leader.”

Possible Candidates

In K-pop, the leader is often the oldest or most experienced member. James, born in 2005 (fan database Kpop Profiles), is the oldest, but Martin is the one fan sites point to as the leader. This contradiction suggests the role may not have been decided internally.

The trade-off: Martin’s leadership is a strong fan hypothesis, but James’s seniority complicates the picture. The group may operate without a single leader, similar to some self-producing acts.

Are All CORTIS Members Korean?

Nationalities

All five members are reported to be South Korean, according to multiple fan profiles. However, KFriday reported that Martin is Canadian-Korean, which would make him a dual-heritage member. This hasn’t been corroborated by BigHit Music.

Diversity in CORTIS

No member has publicly claimed a different nationality. The group currently appears ethnically homogeneous, but Martin’s Canadian connection, if true, would add an international dimension.

Why this matters: Nationality claims affect fan perception and global marketing. Without official confirmation, the diversity profile of CORTIS remains unclear.

CORTIS Members – Spec Table

Five members, one pattern: their birthdays and roles are known mostly from fan databases, not the agency.

The implication: Until the agency releases official data, this table relies on fan databases and entertainment news — use it with caution.

Key Perspectives on CORTIS

“James is a dance prodigy with a black belt in taekwondo and around ten years of ice hockey experience.”

Rolling Stone

“Martin is described as the group’s leader in multiple profiles and reports.”

fan database Kpop Profiles

“Seonghyeon works as a topliner and lyricist.”

Rolling Stone

The pattern: The Rolling Stone interview is the only primary source offering substantive background, making it the gold standard for any CORTIS profile.

For K-pop fans tracking BigHit’s newest group, the signal is clear: most member details remain agency-unconfirmed, while fan databases fill the gaps with reasonable but unverified data. Prospective fans should rely on the Rolling Stone interview and official social media for accurate information, and treat fan-generated profiles as provisional until BigHit Music releases an official member guide.

For a comprehensive look at each member’s background, fans can refer to detailed profiles of CORTIS members which offers in-depth information beyond the basics.

Frequently asked questions