The Hippocritic Oaf appeared in the "Cliff's Nightmare" episode of The Cosby Show. With a name tag reading "Dr. H. Oaf," the creature pleads with Dr. Huxtable to rush to the hospital for an emergency delivery of a Koozebanian baby.

His name is a play on the Hippocratic Oath taken by physicians pertaining to the ethical practice of medicine.

The puppet appeared in episode 103 of The Jim Henson Hour as a storybook king, also performed by Kevin Clash.