Kim Se-jeong (김세정) is a South Korean singer and actress under Jellyfish Entertainment. She was the main vocalist and face of the girl group gugudan and represents the number 3.
She gained popularity after ranking second in Produce 101, a survival show that formed the project girl group I.O.I. She debuted with I.O.I on May 4, 2016, with their first mini album “Chrysalis”.
On June 28, 2016, Sejeong debuted as a member of gugudan with their first mini album “Act.1 The Little Mermaid". Due to conflicting schedules, Sejeong was absent from the promotions of I.O.I’s single album “Whatta Man”.
Sejeong also launched her solo career on November 23, 2016, with the digital single “Jelly Box Flower Way”. After releasing their final digital single “Downpour”, I.O.I officially disbanded on January 29, 2017.
Se-jeong ventured into acting in July 2017, starring as the female lead in KBS2’s teen drama School 2017.
A year later, she became part of gugudan’s second sub-unit, gugudan SEMINA, and released their first single album “Semina” in July 2018. Sadly, gugudan disbanded on December 31, 2020, after four years of activity.
Sejeong continued to pursue her solo career and acted as the lead actress in the hit K-drama “Business Proposal”. She also became a popular guest on various idol and variety shows. Kim Se-jeong is now one of the most sought-after celebrities in the entertainment industry.