ARMYs have watched the evolution of all BTS members since their debut and have recently sounded off about RM's improving physique. Many fans took to social media to share their positive reactions to RM bulking up.

Based on a report by All Kpop, a community forum recently raised a discussion of RM's physical transformation in recent years. Supported by a visual timeline of images from debut to present, ARMYs discussed how the BTS leader has been working out and filling out recently.

Fan feedback was leaning towards the positive side as fans appreciated the result of his hard work as RM strived towards achieving a more muscular and toned figure.

Fans pointed out that even though he was always slender, RM has always taken care of his physique and gradually started to work out. They also posted clips of the BTS leader as he did push-ups and lifted weights.

"OMG he looks so healthy! The very best toned figure", one fan said. Another gushed: "When you see him in real life, you can tell even better; his face is really small but it's like his entire figure is good-looking. Another expressed regret that there was only one RM in the world, while some noticed the transformation during his recent appearance at the Grammys.

As the leader of BTS, RM is known not only for taking care of himself but also for his members and labelmates. It recently came to the attention of the public how RM avenged the honor of Big Hit Entertainment CEO Bang Si Hyuk after rappers Brave Brothers called out Bang Si Hyuk, JY Park, Cho Young Su, and Shinsadong Tiger as producers who produced fake idol music way back in 2010.

RM, who along with Iron and Supreme Boi, was training under Big Hit Entertainment, came up with an ingenious plan to avenge their PD.

RM, who was 17 years old at the time, released a pre-release rap track called Hook Gayo with his crew and clapped back at Brave Brothers' track with an epic burn.

Brave Brothers reportedly never released a response, leading plenty of onlookers to believe that the younger rappers got the best of the senior artists.

All of this happened before BTS debuted and since then, BTS' music reached epic heights all over the world, reported Koreaboo.

"BTS and Bang Si Hyuk sunbae have opened up an amazing door for the rest of us," RM said in defense of his label's CEO.