BTS fans shouldn't miss this If you're part of the BTS ARMY, then you'd know about BT21. It's the LINE friends characters created by BTS' RM, Jin, SUGA, j-jope, Jimin, V, and Jung Kook. These characters are known as Tata (V), Mang (j-hope), Chimmy (Jimin), RJ (Jin), Koya (RM), Cooky (Jung Kook),...