Stage Name: Martin (마틴)
Full Name: Martin Edwards Park (에드워드 마틴 박)
Korean Name: Park Woo-joo (박우주)
Role: Leader
Date of Birth: March 20, 2008
Zodiac Sign: Pisces
Chinese Zodiac: Rat
Height: 190.5 cm (6’3″)
Weight: Not disclosed
Blood Type: Not revealed
MBTI: ENFP
Nationality: Canadian–Korean
Signature Color: Red
Representative Emoji: 🐕 (Dog – Italian Greyhound)

– Martin was born in Canada.
– He holds dual heritage—his father is Canadian and his mother is Korean.
– He attended Seoul Joongdae Elementary School.
– In 2018, he performed as part of the children’s choir at the PyeongChang Winter Olympics and had the honor of being the flag bearer for the Icelandic team.
– Martin began training under BigHit Music around 2019–2020.
– As CORTIS’s official leader, he is also the tallest member of the group.
– Fellow member Seonghyeon notes that Martin is the loudest among them, and he’s also reputed to eat the fastest.
– He helped produce all five tracks on CORTIS’s debut EP Color Outside the Lines and even contributed to the choreography for their pre-debut song “GO!”.
– Martin’s favorite song from the EP is “What You Want”.
– As a prolific songwriter and producer, he’s credited on tracks for senior HYBE acts including TXT (“Deja Vu,” “Miracle,” “Beautiful Strangers”), ILLIT (“Magnetic”), LE SSERAFIM (“Pierrot”), and ENHYPEN (“Outside”).
– His personal emoji favorite: 🐟, and his favorite color is orange.
– Martin is known to be particularly fond of dogs.
– His creative hobbies also include drawing, and he’s skilled at playing the synthesizer and drums.
– His audition song for BigHit was “Baby” by Justin Bieber.
– He trained alongside members of ENHYPEN and is close friends with ENHYPEN’s Jungwon.
– Martin has mentioned that, while he sometimes doubts how much his leadership matters, having his members as friends ease the pressure he feels.

Stage Name: James (제임스)
Birth Name: Zhao Yufan (趙雨凡)
Position(s): N/A
Birthday: October 14, 2005
Zodiac Sign: Libra
Chinese Zodiac Sign: Rooster
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: INTP (formerly ISTJ)
Nationality: Hong Kongese-Thai
Representative Color: Green
Representative Emoji: 🦅 (Eagle)

Stage Name: Juhoon (주훈)
Birth Name: Kim Ju-hoon (김주훈)
Position(s): N/A
Birthday: January 3, 2008
Zodiac Sign: Capricorn
Chinese Zodiac Sign: Pig
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: ISFP
Nationality: Korean
Representative Color: Blue
Representative Emoji: 🐢 (Turtle)

– He was born in Seoul, South Korea. 
– Juhoon studied at Sangmyung University Teacher’s College Experimental Elementary School and later attended Young Hoon International Middle School. 
– As a child, he worked as a child model. 
– He speaks both Korean and English fluently.
– Juhoon also played basketball on a youth team.
– He joined BIGHIT Music as a trainee around 2023–2024. 
– His favorite food is ramyeon. 
– He fondly remembers enjoying a day out at an amusement park in the U.S. during their training break. 
– If he could be any member for a day, he’d choose Martin—just to experience that tall stature. 
– Juhoon’s daily routine includes asking his fellow members what they’d like to eat.
– Martin mentions Juhoon is the fastest eater in the group. 
– He contributed to four songs on their debut EP Color Outside the Lines: “GO!,” “What You Want,” “FaSHioN,” and “JoyRide.” 
– Juhoon also helped with the choreography for “GO!” 
– His favorite emoji is the rock-on/“🤘” symbol. 
– His go-to color is black. 
– He is a cat person, and particularly likes cats.
– Juhoon revealed that he auditioned with the song "Slow Dancing" by BTS’s V.
– He calls himself the “chill member” of CORTIS. 
– In a fun memory, he once got sand in his eyes and mouth while filming the music video in a desert setting. 
– His first impressions of other members: James was like a big brother; Seonghyeon and Keonho were really kind; Martin impressed him with his singing and dancing skills. 

Stage Name: Seonghyeon (성현)
Birth Name: Eom Sung-hyun (엄성현)
Position(s): N/A
Birthday: January 13, 2009
Zodiac Sign: Capricorn
Chinese Zodiac Sign: Rat
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: INTP
Nationality: Korean
Representative Color: Black
Representative Emoji: 🦊 (Fox)

– Seonghyeon was born in Seo-gu, Daejeon, South Korea, he grew up with a younger sister and completed his education at Daejeon Gwanjeo Elementary School.
– His traineeship at BigHit began in 2021 and has spanned approximately five years, starting when he was 13 years old (Korean age).
– Known for being reserved yet highly creative, Seonghyeon stands out as the group's topliner and lyricist—contributing to all five tracks on their debut EP Color Outside the Lines and co-developing choreography for the pre-debut single “GO!”.
– In training, he produced about 100 tracks—an impressive record showcasing his songwriting productivity. 
– His taste in music has also evolved over time, expanding from pop to include hip-hop, R&B, and jazz influences.
– Personal touches: he dislikes mint chocolate, favors acai bowls, and gravitates toward green as his favorite color.
– Seonghyeon is also fond of both cats and dogs.
– Additional strengths include a signature routine—watching movies before bedtime, starting his day with coffee, and exercising before sleep.
– He dreams of traveling and shaping content inspired by his experiences, and he’s known for perfecting a distinct style in music, fashion, and dance.

Stage Name: Keonho (건호)
Birth Name: Ahn Geon-ho (안건호)
Position(s): Maknae
Birthday: February 14, 2009
Zodiac Sign: Aquarius
Chinese Zodiac Sign: Ox
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: INTP
Nationality: Korean
Representative Color: Yellow
Representative Emoji: 🐶 (Puppy)

– He was born in Pajang-dong, Jangan-gu, Suwon, Gyeonggi-do, South Korea, and is the youngest sibling with an older sister.
– At home, he has a puppy named Cookie.
– His educational journey includes attending Pajang Elementary, transferring to Yeoul Elementary, and enrolling at Chonggye Middle School, though he later withdrew.
– Before his trainee years, Keonho ranked top in competitive swimming and continued the sport until sixth grade.
– He joined BigHit Music as a trainee in 2021.
– In a fun twist, he jokingly said he finds his older bandmates "weird—but in a good way."
– His favorite ice cream flavor is salted caramel, and he loves winter for the holiday vibes.
– He still enjoys eating French fries, even as a trainee.
– Keonho contributed to four tracks on their EP Color Outside the Lines: “GO!”, “What You Want,” “FaSHioN,” and “JoyRide.”
– He also had a hand in choreographing their pre-debut song “GO!”
– His favorite music video from CORTIS is “Lullaby,” because watching it feels like hanging out with pals.
– For his audition, he performed BTS’s “Dynamite.”
– His go-to emoji is 🙃, and he loves vintage-toned colors.
– Deep down, he’s a dog person.
– With his visuals already going viral, fans have crowned him the “5th Gen It Boy” and compared him to idols like Cha Eun-woo and V from BTS.