BTS leader and rapper RM aka Kim Namjoon recently melted the internet ... a few even wondering if RM was working out in the military gym with his bandmates Jungkook and V (Kim Taehyung).

Hugh McIntyre covers music, with a focus on the global charts. RM is back on top of several Billboard charts this week. The BTS singer and rapper joined Megan Thee Stallion on her new single ...