Actor Lee Yoo Jin received great attention from the very beginning of 'Produce X 101.'
On the first episode that aired on May 3, Lee Yoo Jin, an actor from the hit drama 'SKY Castle,' said in an interview, "In life, it's good to be in the middle of the pyramid but sometimes you have to reach the top of the pyramid." He showed strong passion, stating, "I will show my passionate side to the Nation's Producers. My goal is to rank #1."
When Lee Yoo Jin entered the studio, the trainees reacted surprised, and said, "Isn't he from 'SKY Castle'? I enjoyed the drama." Another trainee remarked on Lee Yoo Jin's "advantage", stating, "'SKY Castle' is cheating!"