Insane Clown Posse
The key ICP ingredients: KISS-inspired make-up, silly costumes, controversial lyrics, a high profile feud with Eminem and another silly genre name ("horrorcore rap"). For years rap duo and pro WWE wrestlers Insane Clown Posse claimed to operate under the mysterious dictates of a force they called The Dark Carnival, which later turned out to be a metaphor for a vengeful God, with the band claiming that their songs were all laced with subliminal messages.
Weirdest track: Riddle Box