Bang Si Hyuk talked about how the members of BTS changed over time in an interview with OSEN.
The CEO of Big Hit Entertainment has watched BTS since they were in their teens. Bang Si Hyuk stated, "I met Rap Monster when he was in the 8th grade so I've seen him for about 7-8 years.They started training when they were young so it's fun to see how their personalities changed over time."
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He talked about maknae Jungkook and said, "Jungkook actually couldn't sing at all when I asked him to. He was so shy and kept on twisting his body for 15 minutes. Our agency even judged that it was impossible for him to debut because he didn't have talent but now he has become a playful member."