Harryotter has 1 Dr. Octagon concert.

Dr. Octagon is one of Kool Keith's many alter egos. His initial release as Dr. Octagon was 1996's Dr. Octagonecologyst, on which he collaborated with Dan The Automator Nakamura and DJ QBert. After the name was dropped in favour of Dr. Dooom, it was widely believed that it wouldn't be used again until the release of 2006's The Return of Dr. Octagon, which Keith maintains was changed and released without his consent.