Full Name: Martin Edwards Park Birthday: March 20th, 2008 Known For: Martin (born March 20, 2008) is the 18-year-old South Korean-Canadian leader, main vocalist, and producer of the K-pop boy group CORTIS under BIGHIT MUSIC. He is widely recognized for his towering 6'3" to 6'4" frame and his advanced musical production skills, which earned him a reputation as an industry prodigy before his official debut in August 2025. Likes Juhoon.

Full Name: Zhao Yufan Birthday: October 14th, 2005 Known For: Zhao Yufan (born October 14, 2005), professionally known by his stage name James, is a multi-talented Thai-Chinese singer, songwriter, and choreographer under BIGHIT MUSIC. He is the eldest member and main dancer of the five-piece K-pop boy band CORTIS, which officially debuted on August 18, 2025.

Full Name: Ahn Keonho Birthday: February 14th, 2009 Known For: Keonho (Ahn Geon-ho) is a South Korean singer, songwriter, and the youngest member (maknae) of the breakout 5th-generation K-pop boy group CORTIS. Operating under the label BIGHIT MUSIC, he debuted with the group on August 18, 2025. He has rapidly risen to fame, being dubbed by fans and media alike as a "5th Gen It Boy" due to his high global search metrics and massive social media engagement.

Full Name: Kim Juhoon Birthday: January 3rd, 2008 Known For: Juhoon (Kim Ju-hoon) is a South Korean singer, songwriter, and dancer under BIGHIT MUSIC. He is best known as a member of the K-pop boy group CORTIS, which made its highly anticipated official debut on August 18, 2025.

Full Name: Eom Seonghyeon Birthday: January 13th, 2009 Known For: Seonghyeon (born Eom Seong-hyeon on January 13, 2009) is a South Korean singer, songwriter, and producer under BIGHIT MUSIC. He is a member of the rising K-pop boy group CORTIS, which officially debuted on August 18, 2025. Within the group, he is highly recognized as a creative "raw talent," actively shaping their musical identity through heavy involvement in production and songwriting.