Onyx is a rap group hailing from South Jamaica, Queens, which debuted with their hit album Bacdafucup.
The main reason they get an article here is because of their life of crime. Sticky Fingaz, for instance, has had violent altercations with people who upset. But one of the most evil things they've done in their history together is shoot people randomly for the sake of a bet.
They are basically the black supremacist equivalent of the white supremacist band Skrewdriver.