A.R.M.Y is the fandom name for a popular south Korean idol group called BTS, (Bangtan Boys or Bangtan Sonyeondan).
A.R.M.Y (아미) which stands for Adorable Representative M.C for Youth. ARMY is military in English, the body armor and military are always together, so it means that the fans will always be together with the Bangtan Boys.
Kpop Newbie: I like BTS's music, but what is their fandom name?
BTS Fan: BTS fandom name is A.R.M.Y / 아미!
by Miss Fujoshi December 6, 2016
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Fans who are passionate, so much so that they will hurt you if you say anything bad about BTS
Ex. 1
Jin: ARRRRMMMMYYYYYYYYY

Ex. 2
Person: Whos your favorite artist?

A.R.M.Y: Oh, BTS
Person: You mean those one Chinese singer?

A.R.M.Y: ...
*a flood of A.R.M.Y swarm in*
by BangBangTan January 13, 2021
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