A recurrent character in the works of Osamu Tezuka, especially Astro Boy and Metropolis, and a part of Osamu Tezuka's Star System.

Higeoyaji appears in Astro Boy as a school teacher and detective who asserts the rights of robots, but he also frequently plays as a detective in other stories too. His many roles are a lawyer, sushi bar chef, teacher, politician, judo expert, even (in Rainbow Parakeet) a butterfly!