Annnnnnnd then I just remembered our definition of "buster" is definitely the opposite of a dude, buddy, or pal. A buster is somebody whack, an outcast the whole hood doesn't fuck with, a grade A loser, an enemy. Nobody calls them "my guy".
Ie, Here is the legend Nate Dogg referring to "Busters" https://youtu.be/1plPyJdXKIY?t=60
The only "Buster" that is none of that is Busta Rhymes because he "got you all in check" https://youtu.be/EQzvQO2LcA4?t=38