Having introduced the character in 1993 on the unreleased Ultramagnetic MC's demo "Smoking Dust", Thornton's first full-length recording as Dr. Octagon was on his 1996 debut solo album, Dr. Octagonecologyst.

Kool Keith reunited with Dan the Automator and DJ Qbert to release Moosebumps: An Exploration Into Modern Day Horripilation on April 6, 2018.

[2] Dr. Octagon is an extraterrestrial surgeon from Jupiter who uses space technology and primitive tools to perform medical procedures on his patients, some of whom die as he conducts his rounds, while others are murdered by his careless, barbaric acts.

[3] Octagon specifies a few of the services he offers, such as treatment of chimpanzee acne and moosebumps, rectal rebuilding surgery, and relocating of saliva glands.

Multiple music critics and record producers made attempts to keep him alive, but Dooom returned to finally kill Octagon by electrocuting him with an electric razor.

The earliest instance of Thornton's Dr. Octagon character appears on the unreleased Ultramagnetic MC's demo "Smoking Dust", recorded in 1993 and included in the 1994 compilation album The Basement Tapes 1984–1990.

"[5] Thornton mailed the songs to radio stations as a teaser, as well as giving copies to several DJs, as well as producer Dan "The Automator" Nakamura, resulting in the production of Dr.

"[8] The album examines the impersonal, delusional and authoritarian aspects of institutions and bureaucracies using the general hospital and psych ward as main metaphor.

These performances featured a full live band, an on-stage breakdancer and appearances by Invisibl Skratch Piklz.

Once again performing as Dr. Octagon, Kool Keith reunited with Dan The Automator and DJ Qbert to release Moosebumps: An Exploration Into Modern Day Horripilation on Bulk Recordings.