originally used for stans of the group BTS who believe "bts is the genre" as to not limit bts and their music to any particular genre. The term originated as a result of an interview with the recording academy in which bts members answered "the genre is bts" in response to a statement about how their album Map of The Soul 7 broke free from genre confinement as it touches on many genres and sounds.
Over time this word has spun into a negative one and many kpop fans nowadays just throw it around as a word for armys who only stan bts. alot of other fandoms have started doing xyz poppers too despite not liking the term btspopper
anyways heres a gif of park jimin, it boy and loml
kpop fan: DNI racists, homophobes BTSPOPPERS GRR, abelists, sexists
kpop fan: i dont like thisdefiniton of btspopper grr im going to dislike
A person who pops out or from behind boxes with an assault rifle or similar high-powered automaticballistic weapon and fires projectiles in a horizontal arc in front of him.
people who think that bts is their own genre and bts paved the way for kpop.
they r the celebrities of stan twt. sometimes multis can also be btspoppers