Meret Manon Sarpong Bannerman (born June 26, 2002), known simply as Manon in the global girl group KATSEYE, is a 24-year-old Swiss singer and model of mixed Swiss-Italian and Ghanaian descent. She has glowing, tanned skin, expressive dark brown eyes, signature micro-thin arched eyebrows, and thick dark wavy hair frequently styled in long waist-length braids. Standing at 5'5" (166 cm) with a slender build, she speaks Swiss-German, German, and English fluently, knows conversational French, and is learning Spanish and Twi, speaking with a melodic European accent. Known by nicknames like Manz and Manzanita, her sexuality and pets remain undisclosed private matters. Notable details about her include being the first Black artist signed under a HYBE label, her severe strawberry allergy, having multiple meaningful minimalist tattoos, writing songs since childhood, and citing Beyoncé and Billie Eilish as core artistic inspirations.

The multi-talented global pop star Sophia from KATSEYE is officially named Sophia Elizabeth Guevara Laforteza. Born on December 31, 2002 (making her 23 years old), she possesses a beautiful, glowing warm tan skin tone that reflects her Filipina ethnicity. She is characterized by striking features: expressive dark brown eyes, perfectly shaped defined eyebrows, and long, versatile dark brown hair that she styles in various wavy and sleek pop looks. Standing at an elegant 5'6" (167 cm), she has a balanced, fit body. Raised in Manila after being born in New York, she is fully bilingual in English and Tagalog and speaks with a distinct, charming Filipino-American accent. Her sexuality has not been publicly stated, keeping her focus on her music. Affectionately called Sophie, Fifi, and Sopheezy by fans, she is a massive pet lover who owns two dogs named Charlie (a Chow Chow) and Chanel, alongside cats including Wonie and a cat humorously named Yoonchae after her bandmate.

Jeong Yoon-chae (정윤채, born December 6, 2007) is the South Korean maknae (youngest member) of the global girl group KATSEYE. Known for her charming visual aesthetic, she features fair, luminous skin with a warm porcelain undertone, expressive dark brown doe eyes often highlighted with fruit-pink blush beneath them, and soft, naturally defined arched eyebrows. Yoonchae sports naturally dark brown-to-black hair that she frequently styles straight, wavy, or with soft face-framing bangs, and stands at approximately 5'7" (170 cm) with a slender, athletic build. Born in Seoul, she is a native Korean speaker and has rapidly gained proficiency in English, speaking with a charming, subtle Korean accent. Her popular nicknames include Bruni, Marshmallow, Jeongyookmyeonchae ("Cube"), and Yoonchip.

Daniela Andrea Avanzini Llorente, nicknamed Dani or "Latina Mami", is a 22-year-old American singer and main dancer for the global girl group Katseye. Born on July 1, 2004, she is of Venezuelan-Cuban-Italian descent and has a light/fair skin tone. She stands 5'5" (165 cm) with a toned, athletic dancer's physique. Known for her fierce, shape-shifting visuals, Daniela has brown eyes usually styled in her signature, sharp "siren eye" makeup. She frequently changes her hair, transitioning from natural dark brown to voluminous blonde curls, and famously rocked bleached eyebrows. Daniela is a native English speaker with an American accent, but she is also conversational in Spanish, which she speaks with a subtle Latin American blend. While she keeps her exact sexuality private, she was recently linked to a boyfriend, Jonah. Though she hasn't highlighted public pets, she playfully admits she cannot live without her favorite childhood stuffed animal.

Lara Rajagopalan (Tamil name: Vijayalakshmi), known professionally as Lara Raj, is an American singer-songwriter and main vocalist of the global girl group KATSEYE. Born on November 3, 2005 (age 20), she is of Indian Tamil descent and possesses a rich, warm brown skin tone, dark brown/black almond-shaped eyes, defined sculpted eyebrows, long dark wavy hair, and a fit 5'6" (167 cm) frame. She speaks fluent English and Tamil with an American accent, and goes by nicknames like Laru and Lar Lar.Lara is openly queer (under the multisexual umbrella) and has three cats commemorated by a "ZZZ" finger tattoo, alongside seven other meaningful tattoos honoring her heritage, family, and zodiac sign (Scorpio). Renowned for proudly sporting bindis on stage, she produces music, trained at NYC’s LaGuardia High, and placed 2nd on The Debut: Dream Academy.

Megan from KATSEYE, whose actual name is Megan Meiyok Skiendiel (Chinese name: Li Meiyu), is a 20-year-old American singer, dancer, and model born on February 10, 2006. Ethnically Swedish-Chinese, she stands at 169 cm (5'7") with a fit, lean build, light-medium skin tone, dark brown almond eyes, soft dark eyebrows, and long dark brown or dyed red hair. Raised in Honolulu, Hawaii, she speaks English with an American accent, alongside basic Cantonese and basic French. Her nicknames include Meiyok, Mei Mei, and Meggy. She openly identifies as bisexual. Interestingly, she does not own a pet because she is highly allergic to cats (as well as cinnamon and grass). Megan has managed dyslexia, pre-diabetes, and scoliosis, yet she models in Paris and LA fashion weeks, acts, and loves math.