The Novelist appears as a supporting character in the anime Un-Go, first debuting in the sixth episode of the series. His true name is never revealed, and he is introduced as a prisoner. He is a young man appearing to be in his mid-twenties, with a slim and tall build. His distinctive appearance includes dark brown eyes and semi-long mint green hair that is divided into two ponytail-like sections that fall in front of his ears, with a single bang hanging between his eyes. He is typically seen wearing a tan prisoner suit.

The Novelist is described as a self-proclaimed novelist, and his background is tied to his imprisonment. Despite his minor role, he plays a significant part in one of the series' key sequences, where his persona is used as a vessel in a constructed dream world. In this fabricated reality, created through the hypnotic influence of the cult leader Bettenou, the Novelist becomes the focal point of an elaborate illusion. Within this false world, various characters from the series are cast in different roles: the detective Shinjuurou Yuuki becomes a film cameraman, Rie Kaishou becomes a police detective, and prosecutor Izumi Koyama appears as Rie's maid. The Novelist is manipulated to serve as the narrative anchor of this hypnotic construct, demonstrating how his identity and abilities are exploited for a larger scheme.

In terms of personality and motivation, the Novelist is not given extensive independent character development due to his limited screen presence. He functions more as a plot device than as a fully rounded character, with his role revealing the extent of Bettenou's power to warp reality and perception. His primary function in the story is to be a tool through which the antagonist imposes a false reality on the main characters, highlighting the themes of truth and illusion that run throughout the series. His notable ability, by extension, is not his own active skill but rather his susceptibility to being used as a conduit for hypnosis, which allows the creation of an alternate world.

The Novelist's key relationship is with the entity Bettenou and its associated otherworldly being, which has the capability to manipulate the thoughts and actions of individuals. This higher power uses the Novelist as a pawn to construct the dream sequence, showing that the Novelist is a victim of manipulation rather than a willing participant. His relationships with the main cast, such as Shinjuurou and Rie, are strictly contextual within the artificial reality imposed upon them. There is no significant character development for the Novelist over the course of the series; his appearance is confined to this specific episode's storyline, and he serves as an example of how the supernatural forces in Un-Go can override individual agency. His notable ability, while not a power he controls, is his role as a catalyst in the narrative's exploration of fabricated realities and the manipulation of truth.