ArtistStarship Entertainment
Sui
Sui (수이) is the main vocalist of KiiiKiii under Starship Entertainment. Born Lee Su-bin (이수빈) on April 10, 2006, in Seoul, South Korea, she brings a distinctive husky yet warm vocal tone that anchors the group's sound, standing out especially in falsetto and ad-lib passages.
Growing up, Sui attended GaYa Elementary School before enrolling at Geochang Theater High School, a performing arts institution that sharpened her stagecraft from an early age. Her path into the industry began through MuDoctor Academy, a Seoul-based vocal and performance training centre, through which she passed an audition for SM Entertainment in 2022 and began her trainee journey. She later transitioned to Starship Entertainment, completing a pre-debut process before joining the KiiiKiii lineup.
KiiiKiii officially debuted on March 24, 2025, with the EP UNCUT GEM, a release that showcased Sui's ability to carry melodic weight across a range of sonic textures. Her high-note ad-lib in the I DO ME (Acoustic Ver.) video earned particular praise for its clarity and emotional reach. MBTI ENTP, standing approximately 169 to 170 cm tall, she lists grey as her representative colour and the flamingo as her symbol. She has an older sister and is known among her members for being cheerful, emotionally expressive, and openly affectionate about the things she loves.
1 articles4 creditsDebut: March 24, 2025South Korean
Gallery
Discography
2026
Delulu PackEP
Main Vocalist
2025
UNCUT GEMEP
Main Vocalist
Other Credits
2025
I Do MeSINGLE
Main Vocalist
2025
Dancing AloneSINGLE
Main Vocalist
Fans Also Ask
Who is Sui of KiiiKiii?
Sui (수이), born Lee Su-bin (이수빈) on April 10, 2006, in Seoul, is the main vocalist of KiiiKiii under Starship Entertainment. She is known for her husky yet warm vocal tone, particularly praised for her falsetto clarity and emotional ad-lib passages.
What is Sui's real name and birthdate?
Sui's real name is Lee Su-bin (이수빈). She was born on April 10, 2006, in Seoul, South Korea. Her stage name Sui was confirmed ahead of KiiiKiii's official debut in March 2025.
How did Sui become a K-pop idol?
Sui trained at MuDoctor Academy in Seoul, through which she passed an SM Entertainment audition in 2022. She later transitioned to Starship Entertainment and completed her pre-debut process before joining KiiiKiii, who debuted on March 24, 2025.
What has KiiiKiii released?
KiiiKiii debuted on March 24, 2025, with the EP UNCUT GEM. They followed with singles I Do Me and Dancing Alone (2025) and released the EP Delulu Pack in 2026. Sui serves as main vocalist across all group releases.
What are Sui's personal facts?
Sui is approximately 169-170 cm tall with an ENTP MBTI. Her representative color is grey and her symbol is the flamingo. She has an older sister and is known within KiiiKiii for being cheerful, emotionally expressive, and openly affectionate.
