Hisashi Ogura is a recurring character in Tokyo Ghoul, presented initially as a media personality and self-proclaimed expert on ghouls. He is a middle-aged man with short dark hair and a mustache, almost always seen wearing a formal suit during his numerous television appearances. His background includes time spent at Teihou University as a member of the Ghoul Research Society, where he was a classmate of the enigmatic doctor Akihiro Kanou.

In terms of personality, Ogura is ambitious and driven by a desire for public recognition. He is characterized as a publicity hound who leverages any available information on ghouls to present himself as an erudite figure and secure media attention. His approach to his subject is often described as boastful and egotistical, with a tendency to make what are considered nonsensical or falsified claims about ghoul biology and behavior for the sake of appearing knowledgeable on camera. He is not regarded as a top-tier researcher; according to CCG investigator Yukinori Shinohara, Ogura is a minor academic who capitalizes on information from other sources to make himself shine in the media.

Ogura's primary role in the story is that of a commentator and a representative of flawed public understanding regarding ghouls. Early on, he appears on television to discuss the threat of ghouls, such as during the killings committed by the Binge Eater, and is referenced as a source of information following the death of an investigator. His motivations shift significantly as the narrative progresses. After reading King Bileygr, the final book by author Sen Takatsuki, who later reveals herself to be the ghoul Eto Yoshimura, Ogura experiences a drastic change in perspective. He becomes sympathetic to the ghoul cause, joining protest organizations that advocate for ghoul rights. He begins describing ghouls as interesting and very intelligent creatures, even adopting accessories like a headband that reads ghoul lover to show his support.

This transformation leads to a key development in his role. Later in the series, Ogura becomes an active participant in efforts to bridge the gap between humans and ghouls. Members of the organization Goat, including Ken Kaneki, seek his help to find medical aid for a wounded character, and he later participates in a surgery on Akira Mado after the successful retrieval of RC suppressants. He expresses regret for his past behavior, acknowledging that he spread nonsensical commentary about ghouls. He also assists the human side, being summoned by former CCG official Itsuki Marude and Hideyoshi Nagachika to provide crucial background information on his former classmate, Akihiro Kanou, revealing the doctor's origins and motivations.

Several key relationships define his place in the world. His past connection to Akihiro Kanou provides a critical link for other characters trying to understand the doctor's actions. He also interacts directly with former enemies and ghouls such as Shuu Tsukiyama and Nishiki Nishio, apologizing for his earlier misrepresentations. By the end of his arc, Ogura voices his support for the goal of ghouls gaining rights in human society, telling members of Goat that they have his backing.

Regarding notable abilities, Hisashi Ogura possesses no physical or combat capabilities related to ghouls or investigation. His skills are academic and media-focused. He is the author of published works, including Hisashi Ogura's New Book of Ghoul Dismantling and How to Spot a Ghoul, which represent his attempts to systematize and share his (often flawed) knowledge of ghouls with the public. His primary function is as a source of information, commentary, and, eventually, a bridge between human and ghoul societies.