When the boys danced out onto the stage to greet Fallon, Jimin noticed that Fallon was wearing a Chimmy headband (a piece of BTS merch inspired by Jimin).

Not only did they share an adorable hug, but Jimmy Fallon even sported a headband featuring Jimin’s BT21 character Chimmy.

Sometimes he wears colored contacts, other times he wears glasses or sunglasses. Here's what we know about the BTS singer, named Jimin.

That’s when a die-hard BTS fan chimed in and told Fallon that he absolutely needed a Chimmy Clock, which is an alarm clock adorned with Jimin's BT21 character, Chimmy.

Check out how fans are reacting as BTS ' Jimin leaves for his mandatory military service in style, sporting a Dior hoodie and backpack.