"One step to the world! Hello, I'm Sejeong!" Kim Se-jeong (김세정) is a South Korean Singer and Actress under Jellyfish Entertainment. Sejeong is the main vocalist and face of the girl group Gugudan and represents the number 3.
Sejeong first rose to fame upon appearing and ranking 2nd on the hit survival show Produce 101 which qualified her to be a member of the project group IOI. Through the years, Sejeong has become one of the most sought-after celebrities in the idol and variety entertainment.