aka Dr. Dooom aka Dr. Ultra aka Black Elvis aka more things that I can remember ( - but there is a handy document of them - Kool Keith personae.) A rapper who has singlehandedly altered the state of rap several times over his career, beginning in The Ultramagnetic MCs and who has been institutionalized several times for bipolar disorder and multiple personality dissassociative disorder on account of his dozens of stage personas. The source of the sample "Smack my Bitch up" used by The Prodigy.