|This article is about a/an ally in Himitsu Sentai Gorenger.|
Professor Hiroki (広木教授 Hiroki Kyōju) is a scientist who was affiliated with EAGLE's project to create a new flying fortress which could defeat the Black Cross Castle. He was the target of an assassination attempt by the Black Cross Army, but was saved by the Gorengers.
Behind the scenes
Professor Hiroki was portrayed by Takeshi Yamamoto (山本 武 Yamamoto Takeshi).