STAYC

Park Su-min is STAYC's leader and main vocalist. She trained at High Up Entertainment for several years, developing a powerful upper register that drives STAYC's most demanding vocal arrangements. As the eldest, she provides the group's emotional and professional anchor — a role she took on at debut and has grown into as STAYC has expanded internationally.

Lee Si-eun appeared as a contestant on K-pop Star, the talent competition, as a child, giving her early public performance experience before she joined High Up. Her self-possession on stage reflects those years of competition training. She is STAYC's most detail-oriented vocalist, known for the technical care she applies to phrasing and articulation.

Lee Isa grew up partly in the United States, which gave her natural English fluency and a Western aesthetic sensibility that shows in how she approaches fashion and styling. She joined High Up as a trainee in her teens and became STAYC's primary dancer, bringing a looseness and swagger to choreography that reflects her exposure to American street dance culture.

Kim Se-eun trained at High Up from her early teens and developed into one of STAYC's most versatile performers — equally effective as a vocalist and dancer. She is the member most frequently noted by STAYC's choreographers for her ability to adapt to different movement styles, from sharp, precise K-pop formations to softer, more contemporary approaches.

Kim Yoon joined High Up in her early teens and debuted with STAYC at 17. She is the group's most consistently cheerful presence — a natural extrovert whose warmth is visible both on stage and in behind-the-scenes content. Her vocal tone, lighter and airier than Sumin's, provides textural contrast in STAYC's arrangements and has become particularly distinctive in the group's more subdued mid-tempo tracks.

Lee Jung is STAYC's maknae, debuting at 16 as the group's youngest main dancer. She began training at High Up in her early teens and developed a physically precise, energetic movement style. Despite being the youngest, she performs with the confidence of someone who has been on stage for years — a quality that became obvious from STAYC's debut performance.