Cassiopeia is a unit of the 15-member group Undefined. The members include, Riaca, Nysa, Venus and Galaxy.
Riaca
Real Name: Ciriaca Almanzar-Trieu
Age: 21 [7 June 1998]
Zodiac: Gemini
Height: [5'8"]
Weight: [112 lbs]
Blood Type: AB-
Position: Leader of Cassiopeia, Visual, Main Rapper, Main Dancer, Vocalist
Phobia: Glossophobia (fear of public speaking)
Ethnicity: Dominican (Black) and Vietnamese
Nationality: American
Hometown: Spanish Harlem, Harlem, New York
Animal: Ocelot
Color: Indigo
Instagram: lariaca
Twitter: aucoutrelariaca
Snapchat: riamizrahi
Venus
Real Name: Byun Yeri
Age: 21 [29 April 1998]
Zodiac: Taurus
Height: 169 cm [5'7"]
Weight: 50 kg [110 lbs]
Blood Type: A+
Position: Visual, Main Rapper, Main Dancer, Vocalist
Ethnicity: Korean
Nationality: Asian
Hometown: Seoul, South Korea
Color: Apricot
Galaxy
Real Name: Jaylen Brown
Age: 20 [1 September 1999]
Zodiac: Virgo
Height: 152 cm [5'4"]
Weight: 56 kg [125 lbs]
Blood Type: AB
Position: Main Vocalist, Visual
Health Issue: ADHD + Low Blood Pressure
Ethnicity: Black
Nationality: Korean-American
Hometown: Busan, South Korea
Color: Egyptian Blue
Nysa
Real Name: Nesaie Santana
Age: 20 [28 October 1999]
Zodiac: Scorpio
Height: 168 cm
Weight: 58 kg
Blood Type: A-
Position: Center, Main Vocalist, Main Dancer, Maknae of Cassiopeia
Health Issue: Asthma
Phobia: Acrophobia (fear of edges)
Ethnicity: Bajan/Trinidadian Creole
Nationality: American
Hometown: Brooklyn, New York
Animal: Serval
Color: Rose Gold
Instagram: officialysa
Twitter: yesimnysa
Snapchat: nysawtheegoodgood