Dr. Octagonecologyst is the debut solo album of American rapper Keith Thornton who is also known by his aliases as Dr. Octagon, Dr. Dooom, Black Elvis, Dr. Ultra, Crazy Lou, Poppa Large and Kool Keith. Dr. Octagonecologyst introduces the character of Dr. Octagon, a homicidal, extraterrestrial, time-traveling gynecologist and surgeon. It's hard to exaggerate the role that Dr. Octagon played in revitalizing underground hip-hop. Dr. Octagon represented the first truly new, genuine alternative to commercial hip-hop.