On the first episode of 'Produce 101' season 2, Jang Moon Bok talked about his past audition and said, "At the time, I was rejective. I thought my rap was cool. I ignored the negative reactions. But my mother heard not just the criticism on my rap but other malicious remarks. I felt sorry for creating such situations for my mom. I regretted auditioning for 'Superstar K2'."

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He continued, "I cried a lot alone. I also wondered if I should continue the music and rap that I love. I worried whether I should just live like others or try the things I love. (Ultimately) I felt like I need to try it until the end since I started it. Even if I become a topic of laughter, I don't have anything to lose now. That's why I applied for it. I want to show my improvements."

Jang Moon Bok is currently participating in 'Produce 101' season 2 as a trainee of ONO Entertainment.