|This article is about a/an trio of villains in Kamen Rider Black.|
The Three High Priests (三大神官 San Daishinkan) are second only to the Creation King, and they carry out his will. Upon their sacrificing their Stones to revive Shadow Moon, the dying High Priests undergo a transformation into new physical forms called the Grand Mutants (大怪人 Daikaijin), reborn as Shadow Moon's emissaries. Setting up for his final battle with Kotaro, Shadow Moon sends the Grand Mutants to attack the city, overpowering the police as everyone runs out of Tokyo. Kotaro arrives to fight them all before they fallback, telling Kotaro he cannot stop the rise of Gorgom. Eventually, the three are killed off one by one.