한 Members of UDTT UDTT (우당탕탕 소녀단) is a South Korean Girl Group. They consist of 4 members: Risako, Han Chaehee, Koo Hanna and Kwon Yejin. Return to Artist Read All Members 202420252026 RisakoHan ChaeheeKoo HannaKwon YejinJung Sena Risako (리사코) Full Name: Arai Risako Date of Birth: 1997-06-07 (29 years) Zodiac sign: Gemini Country: Japan Active period: 2024-present Role: Leader,Vocal,Dancer Han Chaehee (한채희) Full Name: Han Chaehee Date of Birth: 2001-11-13 (24 years) Zodiac sign: Scorpio Country: South Korea Active period: 2024-present Role: Vocal Koo Hanna (구한나) Full Name: Koo Hyun Kyoung Date of Birth: 2004-01-20 (22 years) Zodiac sign: Aquarius Country: South Korea Active period: 2024-present Role: Vocal,Dancer Kwon Yejin (권예진) Full Name: Kwon Yejin Date of Birth: 2006-06-26 (20 years) Zodiac sign: Cancer Country: South Korea Active period: 2024-present Role: Vocal Past Members Jung Sena (정세나) Full Name: Jung Seung Ha Date of Birth: 2006-10-22 Zodiac sign: Libra Country: South Korea Active period: 2024-2025 Role: Vocal,Rapper,Maknae Images No images yet Return to Artist