This is a list of minor characters in Detective Conan whose one time appearance in a manga case or episode made a notable impact on the plot of the main storyline or influenced the main characters in some way. This list excludes main characters, main law enforcement, the canon Black Organization, and mystery people related to the arc (e.g. Eisuke or Araide).
Sometimes characters on this list may have other minor background appearances, but those appearances generally aren't significant to consider them as recurring characters. Characters who have made multiple appearances in the manga are listed on minor recurring manga characters and those who have reoccurred in the anime or movies are listed on minor recurring anime characters
Mrs. Hondou (本堂さま,Hondō-sama?) is the deceased mother of Hidemi and Eisuke Hondou. She worked as a former housekeeper at Okudaira mansion. She lived separately from Hidemi and Ethan who both went on different paths. Eisuke who lived with her until her death went to live with his father, Ethan Hondou.
Sugihito Enomoto (榎本 杉人,Enomoto Sugihito?), age 28, is Azusa's older brother. His surname comes from Mikiko Enomoto. He is voiced by Hiroyuki Shibamoto.
Kenji Hagiwara (萩原 研二,Hagiwara Kenji?) was a member of the Tokyo Metropolitan Police Department bomb squadron and Jinpei Matsuda's explosive disposal partner. He died in the first of a series of bombings seven years prior to the current timeline. He is voiced by Shin'ichiro Miki.
Wataru Date (伊達 航,Date Wataru?) is a deceased police officer who was Takagi's mentor and Furuya's friend.
Barney
N/A
Barney (バーニー,Bānī?) was a CIA member. After the death of Ethan Hondou's former middle man, Hidemi Hondou enter the Black Organization to get Barney in to be the new middle man. But due to an error, Hidemi made, Ethan committed suicide to save his daughter. Barney arrived seconds after and called out 'Hondou'. When he noticed that Gin and Vodka were present, he committed suicide to avoid being captured.
Satoru Maeda (前田 聡,Maeda Satoru?) is a karate champion who is admired by Ran. He's her main inspiration in the world of karate. He met her as well as Conan and Kogoro during the Night Baron case. He's voiced by Taro Arakawa.
Kaori Shinmei (新名 香保里,Shinmei Kaori?), age 22, is the daughter and literary heir of the famous mystery story writer Nintaro Shinmei (Jonathan Nantz in the Funimation Dub), author of the Detective Samonji novel series. While she is not featured again following the resolution of her father's disappearance case, she continues his literary work, which makes several subsequent appearances within the Detective Conan storyline. In the Funimation Dub, she is Katie Nantz and is voiced by Cynthia Cranz.
Fusae Campbell Kinoshita (フサエ・キャンベル・木之下,Fusae Kyanberu Kinoshita?) is Agasa's long lost love and an accessory fashion designer with a ginkgo leaf-themed brand.
Apollo Glass (アポロ・グラス,Aporo Gurasu?), age 8, is the younger brother of Minerva Glass. Apollo's father was German and his mother, Juno Glass, is English. His father died in a traffic accident before he was born.
While watching a tennis match, Apollo received a note from a mysterious person who would turn out to be Hades. While looking for Sherlock Holmes, he met Conan, who said he was "Holmes' Apprentice", who took the note to investigate it. Later on Apollo went to his older sister to tell her about "Holmes' Apprentice". Eventually Apollo accompanied Ran and Kogoro as they investigated in London.
Motoe Benzaki (弁崎 素江,Benzaki Motoe?) is the fake Tohei Benzaki's wife. In fact, it is Vermouth in disguise to spy Jodie, which means Motoe does't exist.
Natsuko Shibuya (ナツコ澁谷,Shibuya Natsuko?) is a teacher from Haido Elementary School and was friend with Jodie since Natsuko learned her how to speak Japanese.
Antonio Gomez (アントニオ・ゴメス,Antonio Gomesu?) is a Black Organization historiographer focusing on Oda Nobunaga that was exclusively in volume 3 of The Mysteries of Japanese History. Conan uses his kick enhancing shoes to kick a desk into his face.
The Weapon Smuggler is an unnammed businessman that practiced contraband weapon dealing and was witnessed by Black Organization members. In order for them to keep quiet, he goes to a rendez-vous with Gin and Vodka to exchange money for informations. He is voiced by Shinpachi Tsuji.
Chotaro Shinki (信喜朝多郎,Shinki Chōtarō?) is a Haido Central Hospital patient that appears in Clash of Red and Black. He was hospitalized for a bone fracture in his right leg and was a potential Black Organization member until they found out he was just a normal person. He has a grumpy attitude and doesn't like when Conan bursts into his room.
Chugo Nishiya (西屋忠剛,Nishiya Chugo?) is a Haido Central Hospital patient that appears in Clash of Red and Black. He was hospitalized for acute lower back pain Black Organization member until they found out he was just a normal person. Compared to Chotaro, he is much more receptive to Conan's questions even if he had difficulty to lean his back.
