When Young K was still a trainee, he used to live with Got7's Bambam.
Young K appeared in Dream High 1 and 2 as a back-up dancer.
When Day6 was asked 'If you have a younger sister who would you never let your sister date?', Sungjin and Wonpil picked YoungK because he knows women too well judging from his lyrics.
Young K was roommates with Stray Kids’ Bang Chan on their trainee days.
On May 18, 2020, he officially became a DJ for MBC Idol Radio with GOT7's Youngjae.
When he was in high school he used to be in a three-member band called "Third Degree".
Young K loves watching cartoons and webtoons.
Young K's stage name was supposed to be Younghyun but he was having trouble pronouncing his name.
Young K's role model is One Republic.
Young K and Wonpil almost debuted on a dance group.