UDTT Members Profile and Facts
UDTT (우당탕탕 소녀단) is a 5-member South Korean pre-debut girl group under SW Entertainment. They consists of: Risako, Han Chaehee, Koo Hanna, Kwon Yejin, and Jung Sena. The group released a pre-debut song titled “𝐑𝐄𝐓𝐑𝐘” on December 11, 2024. They will officially debut in early 2025.
Group Name Meaning: N/A
Official Greeting: “(two, three) Hello, We are UDTT!”
UDTT Official Fandom Name: N/A
Fandom Name Meaning: N/A
UDTT Official Color: N/A
UDTT Official Logo:
Official SNS:
Instagram: @udtt._.official
X: @udtt_official
Facebook: @udtt.official
TikTok: @udtt_official
YouTube: @udtt_official
Website: UDTT
UDTT Member Profiles:
Risako
Stage Name: Risako (리사코)
Birth Name: Arai Risako (新井 理沙子)
Position(s): Leader
Birthday: June 7, 1997
Zodiac Sign: Gemini
Chinese Zodiac Sign: Ox
Height: 161 cm (5’3″)
Weight: N/A
Blood Type: N/A
MBTI Type: ENFJ
Nationality: Japanese
Instagram: @arai_risako_67
YouTube: @arairisako3066
Risako Facts:
– She was revealed as the first member on November 24, 2024.
– Her hobbies are drawing and going to the Mangwon Market.
– Her specialties are dancing, speaking Korean, and vocal mimicry.
– She is the smallest member.
– She was a contestant on Girls Planet 999, where she was eliminated in episode 8.
– She used to be under iMe KOREA (2022–2023) and Biscuit Entertainment (2021).
– Her motto is “Never get tired of her attractive dancing, Arai Risako!”.
– She can speak Japanese and Korean.
– She can play the piano.
– She worked as a backup dancer for major Japanese artists since her childhood.
Han Chaehee
Stage Name: Han Chaehee (한채희)
Birth Name: Han Chae Hee (한채희)
Position(s): Sub Vocalist
Birthday: November 13, 2001
Zodiac Sign: Scorpio
Chinese Zodiac Sign: Snake
Height: 168 cm (5’6″)
Weight: 47 kg (103 lbs)
Blood Type: A
MBTI Type: N/A
Nationality: Korean
Han Chaehee Facts:
– She was revealed as the fifth member on November 28, 2024.
– She is a former member of the pre-debut group G.I.G.
– She used to be under CUP Entertainment (2021-2022).
– She won the 2016 Youth Dance Competition and has received awards at cultural arts festivals.
Koo Hanna
Stage Name: Koo Hanna (구한나)
Birth Name: Koo Hyun Kyoung (구현경)
Position(s): Main Vocalist
Birthday: January 20, 2004
Zodiac Sign: Aquarius
Chinese Zodiac Sign: Goat
Height: N/A
Weight: N/A
Blood Type: A
MBTI Type: ESTJ
Nationality: Korean
Instagram: @gusrudl
Koo Hanna Facts:
– She was revealed as the second member on November 25, 2024.
– She attended STAGE631 academy and Flat9 Academy.
– Her motto is “My youth is blood, sweat and tears”.
– She used to be under iMe KOREA (N/A), PocketDol Studio (2021), BEATS Entertainment (2022-2023), and Biscuit Entertainment (2021).
– She was a contestant on the survival show My Teenage Girl, where she was eliminated on Episode 3.
– The hashtags she uses to describe herself include: #refreshing, #smilingangel and #giantbaby.
– She worked as a backup dancer for the 2019 H.O.T. concert.
– She participated in the choreography video for T-ara Jiyeon’s “Take a Hike”.
Kwon Yejin
Stage Name: Kwon Yejin (권예진)
Birth Name: Kwon Ye Jin (권예진)
Position(s): Sub Vocalist
Birthday: June 26, 2006
Zodiac Sign: Cancer
Chinese Zodiac Sign: Dog
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: ENTP
Nationality: Korean
Kwon Yejin Facts:
– She was revealed as the third member on November 26, 2024.
– Her nickname is Geuroppi.
– Education: Lila Art High School.
– She dislikes bugs.
– Her charming point is the dimples on both her cheeks.
– She was a contestant on the survival show Universe Ticket, where she was eliminated on Episode 4 ranking #72.
Jung Sena
Stage Name: Jung Sena (정세나)
Birth Name: Jung Seung Ha (정승하)
Position(s): Sub Vocalist, Maknae
Birthday: October 22, 2006
Zodiac Sign: Libra
Chinese Zodiac Sign: Dog
Height: N/A
Weight: N/A
Blood Type: N/A
MBTI Type: N/A
Nationality: Korean
Jung Sena Facts:
– She was revealed as the fourth member on November 27, 2024.
– She graduated from a dance department, winning the 2021 “Dance and Opera” award and the SAC Competition special prize.
– Education: Hanlim Arts School.
Note #1: Please don’t copy-paste the content of this page to other sites/places on the web. If you use info from our profile, please kindly put a link to this post. Thanks a lot! 
– Kprofiles.com
Note #2: Koo Hanna was confirmed as the Main Vocalist, and Risako as the Leader, in an article shared by the group’s official X (Twitter) account (Link). The group’s X (Twitter) account shared a second article confirming that Kwon Yejin, Jung Sena, and Han Chaehee are Sub Vocalists (Link).
For reference on MBTI types:
E = Extroverted, I = Introverted
N = Intuitive, S = Observant
T = Thinking, F = Feeling
P = Perceiving, J = Judging
Made by: “felipe grin§”
(Special thanks to: robhoney, Kpop Wiki)
Latest Pre-debut Release:
Who is your UDTT bias? Do you know more facts about them? Feel free to comment below.
