Pebbles the Invisble Girl

Pebbles the Invisible Girl is an unknown singer who appears on 2 of DOOM's songs. Nobody knows exactly who Pebbles is, though she has appeared on a few other songs by other artists such as Megalon. When asked about Pebbles in his interview with red bull music, DOOM stated that he doesn't remember who she is and he said he payed her 25 dollars to sing some things for Operation: Doomsday.