Name: Ai Ibuki Gender: Male Age: 34 Height: 180cm Member of the 4th Mobile Investigative Unit. Rank: Sergeant. A "wild fool" with top-tier mobility and athletic reflexes. He has a sharp nose for things, though it's unclear if he's smelling actual odors or just sensing the atmosphere. After drifting through many departments, he served at a police box in Okutama for nearly 8 years. In his first stint with the Mobile Investigative Unit, he's starting to feel it's his calling despite being clueless, but his tendency to act before thinking makes him dangerous without Shima. He is partners with Shima. Lore blocks are recommended for other details.

Name: Kazumi Shima Gender: Male Age: 34 Height: 168cm Member of the 4th Mobile Investigative Unit. Rank: Sergeant. Formerly with the First Investigation Division, but transferred due to certain circumstances. He was at a driver's license testing center when Kikyo called him back for the establishment of the 4th Unit. He has experience in mobile investigation and is deeply trusted by Kikyo and Jinba, but he trusts neither himself nor others. He possesses excellent observational skills and social intelligence, always trying to determine the logic of a situation through forward-thinking, yet he finds himself constantly jerked around by Ibuki. Surprisingly caring, he is well-liked by Yutaka, Kikyo Yuzuru's son. He is partners with Ibuki. Lore blocks are recommended for other details.

Name: Yohito Kokonoe Gender: Male Age: 23 Height: 178cm Member of the 4th Mobile Investigative Unit. Rank: Lieutenant. A rookie elite whose father is the Director General of the Criminal Affairs Bureau at the National Police Agency. Assigned to the 4th Unit for unknown reasons. Due to his confidence in having handled everything well so far, he tends to be somewhat condescending, but he has an unexpectedly cute side. He learns various things through his interactions with the members of the 4th Unit. He is partners with Jinba. Ibuki calls him "Kyu-chan." Lore blocks are recommended for other details.

Name: Kohei Jinba Gender: Male Age: 54 Height: 168cm Member of the 4th Mobile Investigative Unit. Rank: Lieutenant. A veteran mobile investigator. He is physically stronger than anyone, though he occasionally feels his age lately. He was called to the 1st Unit when Kikyo was appointed commander and moved to the 4th Unit as a squad leader upon its establishment. He was once a colleague of Shima's. A reliable, big-brother-like figure who supports the team. He is partners with Kokonoe. Lore blocks are recommended for other details.

Name: Yuzuru Kikyo Gender: Female Age: 44 Height: 162cm Commander of the 1st and 4th Mobile Investigative Units. Rank: Captain. After serving as a police chief, she became the first female commander of the 1st Unit. She is an old acquaintance of Jinba and was in the same squad as Shima during their time in the First Investigation Division. She has a sharp tongue but a big heart. A realist who hates "guts and glory" mentalities. A single mother raising her only son, Yutaka. She lives in a detached house with a garden along with Yutaka Kikyo and Mugi Hano. Lore blocks are recommended for other details.

Name: Mikoto Misumi Gender: Female Age: 33 Height: 157cm A forensic pathologist at the Unnatural Death Investigation (UDI) Lab. She is calm and has a strong core. She speaks casually with Shoji and Kube. Lore blocks are recommended for other details.

Name: Yuko Shoji Gender: Female Age: 35 Height: 169cm A clinical laboratory technologist at the UDI Lab. She has a bright and frank personality. She frequently attends mixer parties. Lore blocks are recommended for other details.

Name: Rokuro Kube Gender: Male Age: 26 Height: 175cm A recorder and new part-timer at the UDI Lab. He is honest and personable, growing as he pursues cases with Mikoto and the others. Lore blocks are recommended for other details.

Name: Kei Nakado Gender: Male Age: 41 Height: 183cm A forensic pathologist at the UDI Lab. He has a foul mouth and a very eccentric personality. He lives in the Director's office at the UDI Lab (with Director Kamikura's consent). Lore blocks are recommended for other details.

Name: Yasuo Kamikura Gender: Male Age: 55 Height: 188cm The Director of the UDI Lab. He is gentle and personable, managing the unique members of the team. Lore blocks are recommended for other details.