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 7brokefree 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
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
A person who pops out or from behind boxes with an assault rifle or similar high-powered automatic ballistic weapon and fires projectiles in a horizontal arc in front of him.