It looks like the one with the gun is wearing a mask, possibly with a face on it. So, maybe he is supposed to be an armed robber, since that seems to be a somewhat common disguise (at least in films). He also has a satchel, possibly to hold his loot.
Also, what I thought was a "K-Pop fan" seems to be a cartoonist.
Well, perhaps she is meant to be a
manhwa artist.