Rainbow Rapist Share definition Flag The alias of the rainbow-haired rapper 6ix9ine, who has a number of sexual assault accusations to his name. "Have you heard that new song by 6ix9ine yet?" "Oh, you mean Rainbow Rapist?" Rainbow Rapist by ¥ung $kruff May 3, 2018 0 0 Get merch Get the Rainbow Rapist mug. Buy Now — $32.95 See more merch