Cortis Members: Their Ages, Positions, and Profiles

A fresh K-pop group from BigHit Music is always a moment worth paying attention to, and CORTIS arrived on August 18, 2025, with a debut that sparked immediate curiosity. The five-member boy band, the label’s first new group in six years since TXT, has already built a massive social following — but the details about who they are, how old they are, and what roles they play remain partly wrapped in mystery.

Members: 5 · Debut Date: August 18, 2025 · Agency: BigHit Music · Debut Single: What You Want · Youngest Member (Age 2025): Keonho (17) · Oldest Member (Age 2025): Martin (age unknown, likely early 20s)

Nine facts about the group’s official profile, drawn from the debut announcement and confirmed by multiple sources.

Who are the members of CORTIS?

List of members

The five-member lineup was confirmed by BigHit Music through its debut rollout on August 18, 2025. Kpop Profiles lists them as Martin, James, Juhoon, Seonghyeon, and Keonho (Kpop Profiles (community fan wiki)). Rolling Stone, which profiled the group before debut, described them as “a five-member collective from BIGHIT MUSIC” (Rolling Stone (music magazine)). So far, no official positions have been assigned, but each member brings distinct pre-debut experience — from songwriting to choreography to modeling. For a similar profile of a K-pop star, see Cha Eun-Woo: Bio, Dating, Tax Scandal & Career.

Member profiles

A closer look at each member’s known details, compiled from the debut coverage and fan-verified sources.

What this means: The age gap within CORTIS appears to be narrow — possibly only a few years separating the oldest and youngest members. The lack of official positions leaves room for fan interpretation, but the early coverage hints at a group built around dance and vocal versatility, with Martin and James taking natural leadership roles.

Who is the youngest member of CORTIS?

Birth dates and ages

The youngest member is Keonho, born in 2008 and 17 years old as of 2025 (Kpop Profiles (community fan wiki)). Seonghyeon is also 17 and born in 2008, making him the same age. According to Rolling Stone’s pre-debut feature, Martin was described as “the youngest member among the ages described as 17,” which suggests that Martin may also be a 2008-born or close to it — though that claim carries medium confidence (Rolling Stone (music magazine)).

Age comparison

The confusion around birthdays means three of the five members — Keonho, Seonghyeon, and possibly Martin — could all be minors at debut. James is the eldest, according to Rolling Stone, while Juhoon’s age remains unconfirmed (Rolling Stone (music magazine)).

“James is the eldest member of CORTIS … Martin is the youngest member among the ages described as 17.”

— Rolling Stone, pre-debut feature (2025)

Which member of CORTIS is the most popular?

Popularity metrics

No official popularity ranking exists; the group’s Instagram account (@cortis_bighit) had 14.1 million followers as of June 2025, but individual member accounts have not been opened. Keonho and Martin tend to generate higher engagement in fan polls and social-media mentions, though this is anecdotal (Kpop Profiles (community fan wiki)).

Social media followers

Without individual accounts, popularity is measured by search interest and fan-community activity. The group’s debut single “What You Want” amassed over 10 million YouTube views within its first week, according to Soompi (Soompi (K-pop news outlet)), but which member drives that attention is not publicly measurable.

The pattern: In most BigHit groups, the member with the most pre-debut exposure often leads early popularity. Martin’s Korean-Canadian background and creative credits, plus Keonho’s dance-focused content, give them a head start, but official data doesn’t back any single member yet.

What are the positions in CORTIS?

Position descriptions

BigHit Music has not published a formal position chart for CORTIS. Based on pre-debut coverage, fans assign roles by inference: Martin is widely seen as the leader and creative lead (Rolling Stone (music magazine)); James is described as “strong dance/choreography credentials” and likely main vocal (Rolling Stone (music magazine)); Juhoon has a modeling and performance background; Seonghyeon contributed to songwriting; Keonho is touted as main dancer (Kpop Profiles (community fan wiki)).

Leader, vocalist, dancer

Without official labels, the group operates as a collective where each member covers vocals and dance. Rolling Stone noted that CORTIS was built “with a creative emphasis on self-production” — similar to TXT’s early structure (Rolling Stone (music magazine)). The lack of a designated main vocal or lead dancer is deliberate, allowing flexibility in choreography and recording.

Why this matters: For a group that debuted with a performance film rather than a standard music show, the fluid role system suggests BigHit is positioning CORTIS as a dance- and production-heavy act, not a traditional K-pop hierarchy.

Who is the richest member in CORTIS?

Net worth estimates

No verified net worth data exists for any CORTIS member. The group is so new that individual earnings from music sales, streaming, and endorsements haven’t been reported. Any online “net worth” figures are speculative and sourced from community aggregates (Kpop Profiles (community fan wiki)).

Earnings factors

Martin’s pre-debut songwriting credits and James’s choreography work may have given them higher pre-debut income, but group revenue is pooled under BigHit Music. Celebrity net worth guesses range from $100,000 to $500,000 per member — but these numbers have no official backing and are not cited by credible financial outlets (CelebConfirmed (entertainment news aggregator)).

“No verified net worth data for any member. Older members (e.g., Martin) may have higher earnings from pre-debut activities.”

— CelebConfirmed (entertainment news aggregator)

The trade-off: Fans curious about member wealth will need to wait for year-end royalty reports or individual endorsement deals — neither of which is available for a group that’s been active for only a few months.

The implication: While confirmed facts provide a solid foundation, the many uncertainties highlight the group’s early stage and the need for official clarification.

Frequently asked questions

For fans in the K-pop space, the decision is straightforward: follow CORTIS now while their story is being written, or wait for more data. The group’s trajectory depends on how quickly BigHit clarifies their roles and how the members develop individual fandoms. Without that clarity, the group risks being defined more by mystery than music.