The Fisherman appears exclusively in the 1988 film Kamen Rider Black: Hurry to Onigashima. This character holds a unique place in the franchise as a cameo portrayal by Shotaro Ishinomori, the original creator of Kamen Rider.

Very little background information is provided for the Fisherman, as his role is brief but pivotal. He is presented as a solitary resident of the remote island that serves as the setting for the film's climax. His sole purpose within the narrative is to serve as the means of transportation for the protagonist, Kotaro Minami. After Kotaro loses the trail of a suspicious tour bus carrying abducted children, the Fisherman uses his boat to escort the young hero across the sea to the island where the villains are hiding. No specific personality traits or internal motivations are established for this character, as his function is purely practical to advance the plot.

The Fisherman has no significant relationships with other characters beyond this one-time interaction with Kotaro Minami, nor does he have any notable character development. In terms of abilities, the Fisherman demonstrates the capability to operate a watercraft, which is essential for navigating to the otherwise inaccessible island location. Information regarding the character's background, personality, specific motivations, key relationships, or any form of development is not available.