Kim Heesoo (김희수), better known by his stage name Colde (콜드), is a South Korean rapper, singer-songwriter, and composer. He is a member of the duo offonoff as well as a the crew Club Eskimo.

He made his solo debut on March 28, 2018 with the single “Your Dog Loves You,” and following EP–Wave.

On 18th July, 2018, he established his record label and entertainment agency, WAVY, which oversees artists such as wave to earth, Jiwoo, Milena, and more.

So far, Colde released two more EPs—Love Part 1 (2019) and 이상주의 (idealism) (2021).