CORTIS Members Age is a hot topic for fans to discover more about the young 5-member boy group of BIGHIT MUSIC. CORTIS is made of James, Juhoon, Martin, Seonghyeon and Keonho. Thegroup members range between ages 17 and 20 inSeptember 2026, with James being the oldest and Keonho being the youngest. CORTIS waslaunched in August 2025 under BIGHIT MUSIC. The name of the group isderived from the acronym “COLOR OUTSIDE THE LINES,” whichmeansthis group has a different approach to music, choreography and visual production. They are known for theirinvolvement in artistic activitiesinsteadofjust performing.
Profile Bio
| Detail | Information |
|---|---|
| Group Name | CORTIS |
| Members | James, Juhoon, Martin, Seonghyeon, Keonho |
| Number of Members | 5 |
| Agency | BIGHIT MUSIC |
| Debut Date | August 18, 2025 |
| Age Range in 2026 | 17–20 years old |
| Oldest Member | James – 20 years old |
| Youngest Member | Keonho – 17 years old |
| Leader | Martin |
| Tallest Member | Martin – around 193 cm (6’4″) |
| Individual Net Worth | Not publicly confirmed |
| Fandom Name | COER |
| Official Social Media | Instagram @CORTIS, X @CORTIS_bighit, plus TikTok, YouTube and Weverse |
CORTIS Members Age
The current ages of CORTIS members range from 18 years old 17 to 20. James was born on October 14, 2005, making him 20. Juhoon and Martin were born in 2008, while Seonghyeon and Keonho were born in 2009. This relatively close age range contributes to the group’s youthful identity and natural chemistry.
James
James is the oldest member of CORTIS. He was born on October 14, 2005 and is around 178 cm or 5 feet 10 inches tall. He is recognised for his athletic build, sharp dance skills and energetic stage presence. James also had creative experience before the group officially debuted.
His family background is kept mostly private, although profile sources commonly connect him with Hong Kong and Chinese-Thai heritage. Information about his parents and siblings has not been widely confirmed. James is also known for contributing to choreography and creative work connected with other HYBE artists before CORTIS.
Juhoon
Kim Juhoon was born on January 3, 2008, making him 18 years old in 2026. His reported height is around 175 to 176 cm, or close to 5 feet 9 inches. Juhoon has a youthful appearance, expressive facial features and a polished visual style that fits his earlier experience in modelling.
Before becoming an idol, Juhoon reportedly worked as a child model and studied at an international school. He has also been associated with basketball and songwriting. Details about his parents and siblings remain private, and there are no widely verified reports about his family’s occupations or financial background.
Martin
Martin was born on March 20, 2008 and is currently 18 years old. He serves as the leader of CORTIS and is also the tallest member. Current profile listings place him at around 193 cm or approximately 6 feet 4 inches.
Martin is often described as Korean-Canadian. Profile sources report that his father is Canadian and his mother is Korean, while an older sister has also been mentioned. His public image is strongly connected with songwriting, music production and leadership. Even before debut, Martin had credits linked with other HYBE artists.
Seonghyeon
Eom Seonghyeon was born on January 13, 2009, making him 17 years old. His reported height is around 175 cm, although earlier profiles have listed different measurements. He has a slim build, youthful appearance and a quieter personality compared with some of the other members.
Seonghyeon is known for his interest in songwriting and melody creation. His reported hobbies include basketball, cycling, skateboarding and watching movies or dramas. Profile sources also mention that he has a younger sister. More detailed information about his parents and family life has not been publicly confirmed.
Keonho
Keonho was born on February 14, 2009 and is the youngest member of CORTIS. He is 17 years old in 2026 and holds the group’s maknae position. His reported height is close to 178 cm or 5 feet 10 inches.
Keonho is known for his youthful appearance and energetic personality. He is also associated with the group’s video and creative production work. Because he was born on Valentine’s Day, his birthday is one of the easiest among the members for fans to remember. Family information remains largely private.
Age Order
The CORTIS members from oldest to youngest are James, Juhoon, Martin, Seonghyeon and Keonho. James is nearly three years older than the two members born in 2008, while Seonghyeon and Keonho were born only about one month apart.
Keonho is officially the youngest member, while James takes the role of the eldest. Martin is younger than James and Juhoon but serves as the group’s leader.
Height
Martin is the tallest CORTIS member, with current profiles placing him at around 193 cm. James and Keonho are both reported to be close to 178 cm, while Juhoon and Seonghyeon are generally listed around the mid-170 cm range.
Height information should be treated as approximate because young idols can still grow, and profile measurements sometimes change between sources.
Family
CORTIS members keep most family details outside the public spotlight. Martin has one of the more widely reported family backgrounds, including a Canadian father, Korean mother and an older sister. Seonghyeon is also reported to have a younger sister.
Detailed information about the parents and siblings of James, Juhoon and Keonho is limited. Claims about family wealth or parental occupations should therefore be treated cautiously.
Net Worth
There is no officially confirmed net worth for individual CORTIS members. Since the group debuted only in 2025, many figures published online are based on estimates rather than financial records.
Their income may come from music sales, streaming, performances, merchandise, endorsements and songwriting royalties. However, exact salaries, contracts and personal assets have not been publicly disclosed by BIGHIT MUSIC.
Lifestyle
The public lifestyle of CORTIS mainly revolves around music, rehearsals, performances, songwriting and content production. The members are regularly involved in dance practice, recording sessions, promotional appearances and creative planning.
Unlike celebrity profiles built around luxury homes or expensive cars, CORTIS is more strongly associated with a young creative lifestyle. Their group identity focuses on friendship, teamwork and creating their own music and visuals.
Social Media
CORTIS mainly uses official group social media accounts rather than heavily promoted individual profiles. Their reference profile lists @CORTIS on Instagram and @CORTIS_bighit on X.
The group also connects with fans through TikTok, YouTube and Weverse, where updates, videos, performances and behind-the-scenes material are shared. These official channels are the safest places to follow accurate announcements about the members.
Fun Facts
James is the oldest member, but he is not the leader. Martin leads the group despite being younger, which makes the team structure interesting. Juhoon worked as a child model, while Seonghyeon has shown strong interest in songwriting.
Keonho was born on Valentine’s Day and is the youngest member. CORTIS is also notable because all five members participate in creative work, including music, choreography and video production.
Final Thoughts
CORTIS Members Age ranges from 17 to 20 years old in 2026, making the group one of the younger teams in the current K-pop scene. James is the oldest, while Keonho is the youngest.
With Martin leading the group and all five members contributing creatively, CORTIS has developed an identity based on youth, collaboration and artistic involvement. Their growing fanbase continues to follow their music, lifestyle, social media activity and personal development.
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FAQs
How old are the CORTIS members in 2026?
The CORTIS members are between 17 and 20 years old as of September 2026. James is 20, Juhoon and Martin are 18, while Seonghyeon and Keonho are 17.
Who is the oldest member of CORTIS?
James is the oldest CORTIS member. He was born on October 14, 2005. He is known for his dance ability, performance skills and creative contribution to the group.
Who is the youngest member of CORTIS?
Keonho is the youngest member, also known as the maknae. He was born on February 14, 2009, making him 17 years old in 2026.
Who is the tallest CORTIS member?
Martin is the tallest member of CORTIS. Current profiles place his height at around 193 cm, or approximately 6 feet 4 inches, making him noticeably taller than the other members.
What is the net worth of CORTIS members?
The individual net worth of CORTIS members has not been officially disclosed. Their earnings may come from music, streaming, performances, merchandise, brand work and songwriting, but exact personal financial figures remain private.
